According to Article 13 of the GDPR, the controller (in this case, the electricity supplier) has the obligation to provide the data subject (in this case, the customer) with information about the processing of their personal data, including the recipients or categories of recipients of the personal data, if any. However, before providing such information, the controller must verify the identity of the data subject, to ensure that the information is not disclosed to unauthorized persons. This verification can be done by other means than the personal data already collected, such as asking for additional information, sending a verification code, or using a secure online portal. The other options (A, B, and C) are not relevant for this verification, as they do not relate to the identity of the data subject, but to the scope, purpose, and history of the processing. References:
* Article 13 of the GDPR
* The right to be informed (transparency) (Article 13 & 14 GDPR)
* Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC (General Data Protection Regulation)

Adequacy is a term that the EU uses to describe other countries, territories, sectors or international organisations that it deems to provide an 'essentially equivalent' level of data protection to that which exists within the EU. An adequacy decision is a formal decision made by the EU which recognises that another country, territory, sector or international organisation provides an equivalent level of protection for personal data as the EU does. The effect of such a decision is that personal data can flow from the EU (and Norway, Liechtenstein and Iceland) to that third country without any further safeguard being necessary12.
The European Commission has so far recognised Andorra, Argentina, Canada (commercial organisations), Faroe Islands, Guernsey, Israel, Isle of Man, Japan, Jersey, New Zealand, Republic of Korea, Switzerland, the United Kingdom under the GDPR and the LED, the United States (commercial organisations participating in the EU-US Data Privacy Framework) and Uruguay as providing adequate protection13. On 28 June 2021, the EU Commission published two adequacy decisions in respect of the UK: one for transfers under the EU GDPR; and the other for transfers under the Law Enforcement Directive (LED)2. These decisions contain the European Commission's detailed assessment of the UK's laws and systems for protecting personal data, as well as the legislation designating the UK as adequate. Both adequacy decisions are expected to last until 27 June 20252.
Among the four options given, only Switzerland has been granted an adequacy decision by the EU, which means that it will continue to enjoy adequacy status under the GDPR, pending any future European Commission decision to the contrary. Greece is a member state of the EU, so it does not need an adequacy decision to receive personal data from the EU. Norway is a member of the European Economic Area (EEA), which also includes Iceland and Liechtenstein, and has incorporated the GDPR into its national law, so it also does not need an adequacy decision. Australia has not been recognised as adequate by the EU, so transfers of personal data from the EU to Australia require appropriate safeguards or derogations13. Therefore, the correct answer is D. Switzerland. Reference:
https://pages.iapp.org/Free-Study-Guides_CIPPE-PPC-EU.html https://data-privacy-office.eu/courses/cipp-e-official-training-course/

The GDPR and the Convention 108 are two important data protection instruments that aim to protect the rights and freedoms of individuals with regard to their personal data. They both have some similarities and some differences, but one common feature is that they both require notification of processing activities to a supervisory authority.
A supervisory authority is an independent public body that monitors and enforces compliance with data protection laws. In the EU, there are 47 national data protection authorities (DPAs) that have the power to impose administrative fines, issue guidelines, conduct investigations, and cooperate with other authorities1. In the Council of Europe, there are 54 parties to the Convention 108 that have established their own supervisory authorities or have agreed to be supervised by an external authority2.
Notification of processing activities is a requirement for any controller or processor of personal data that falls under the scope of the GDPR or the Convention 108. A controller is a natural or legal person who determines the purposes and means of the processing of personal data3. A processor is a natural or legal person who processes personal dataon behalf of a controller3. Notification means informing the supervisory authority about certain aspects of the processing, such as:
* The identity and contact details of the controller and processor
* The categories and sources of personal data
* The purposes and legal basis for processing
* The recipients or categories of recipients of personal data
* The retention period or criteria for determining it
* The existence of any automated decision-making or profiling
* The rights of data subjects and how they can exercise them
Notification can be done in various ways, such as:
* Submitting a written notification form
* Publishing a notice on a website or other platform
* Sending an email or other electronic message
* Using an online system or portal
Notification should be done as soon as possible after becoming aware of any relevant information about the processing. It should also be updated whenever there are significant changes in relation to the processing4.
Therefore, both the GDPR and the Convention 108 require notification of processing activities to a supervisory authority. This is one way to ensure transparency, accountability, and compliance with data protection laws.
Reference: https://rm.coe.int/090000168093b851

This is not a valid set of standard contractual clauses because it does not correspond to any of the decisions adopted by the European Commission under the GDPR or the previous Data Protection Directive 95/46. The correct decision for EU processor to non-EU or EEA controller is Decision 2010/87/EU, which was amended by Decision 2004/915/EC. Decision 2007/72/EC is actually related to the recognition of the adequacy of the protection of personal data in Switzerland. References:
* Free CIPP/E Study Guide, page 18, section 3.4.2
* Standard contractual clauses for international transfers, section 1.1
* Standard Contractual Clauses (SCC), section 2.1
* Decision 2007/72/EC