A self-service portal is a feature in Service Cloud that allows creating branded websites and portals for customers to access self-service resources, such as knowledge articles, case management, chat, etc. To ensure that the theme of the self-service portal is consistent with the theme of the B2C Commerce storefront, a Solution Architect should do the following:
Set the value of the Style Sheet URL setting to match the publicly-accessible URL of the style sheet the organization wants to use. The Style Sheet URL setting is a configuration option in Service Cloud that allows specifying a custom style sheet for the self-service portal. The style sheet must be hosted on a publicly-accessible web server and must follow certain guidelines and limitations. By setting the value of the Style Sheet URL setting to match the style sheet used by the B2C Commerce storefront, the Solution Architect can ensure that the self-service portal has the same look and feel as the storefront.
Option B is incorrect because there is no Portal Theme URL setting in Service Cloud. Option C is incorrect because copying any relevant CSS code from the organization's website and pasting it into the pages for the self-service portal in Page Builder is not a recommended or supported way of customizing the theme of the self-service portal. Option D is incorrect because making a copy of the appropriate CSS file from the organization's web server and uploading it to the self-service portal is not possible or advisable. The CSS file must be hosted on a publicly-accessible web server and referenced by the Style Sheet URL setting. Reference:
https://help.salesforce.com/s/articleView?id=sf.networks_overview.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.selfservice_style_sheet.htm&type=5

a) The Contact Data Portability report in Marketing Cloud is a feature that allows creating a report containing subscriber data related to a single contact, such as email address, name, phone number, preferences, etc. This report can be used to provide customers access to their own data or comply with data privacy regulations, such as GDPR or CCPA. B. The Customer Data Snapshots report in Commerce Cloud is a feature that allows creating a report containing purchaser data related to a single customer, such as order history, payment methods, addresses, etc. This report can be used to provide customers access to their own data or comply with data privacy regulations, such as GDPR or CCPA. Reference: https://help.salesforce.com/s/articleView?id=sf.mc_overview_contact_data_portability.htm&type=5 https://documentation.b2c.commercecloud.salesforce.com/DOC1/topic/com.demandware.dochelp/content/b2c_commerce/topics/admin/b2c_customer_data_snapshots.html

Marketing Cloud account hierarchy is the way of organizing Marketing Cloud accounts and business units to support different business needs and use cases. A Marketing Cloud tenant is a top-level account that contains one or more business units. A business unit is a sub-account that can have its own data, content, users, and permissions. To set up Marketing Cloud account hierarchy for a company that has ecommerce sites for three countries: Australia, New Zealand, and Singapore, a Solution Architect should recommend the following:
* Use a single Marketing Cloud tenant and map business units to each site irrespective of the realm. This option allows the company to have a centralized account that can manage all the sites across different countries and regions. It also allows the company to have separate business units for each site that can have their own data, content, users, and permissions. This way, the company can maintain consistency and compliance across all the sites, while also enabling personalization and segmentation for each site.
Option A is incorrect because using a separate Marketing Cloud tenant for each site is not necessary or advisable. It would create complexity and inefficiency in managing multiple accounts and duplicating data and content across them. It would also increase the cost and maintenance of the solution. Option B is incorrect because using a separate Marketing Cloud tenant for each realm and mapping business units to sites within each realm is not optimal or scalable. It would create inconsistency and fragmentation between the realms and limit the ability to share data and content across them. It would also increase the cost and maintenance of the solution. Option D is incorrect because using a single Marketing Cloud tenant and mapping business units to each realm is not sufficient or flexible. It would not allow the company to have separate data, content, users, and permissions for each site within a realm. It would also limit the ability to personalize and segment for each site. References:
* https://help.salesforce.com/s/articleView?id=sf.mc_overview_account_hierarchy.htm&type=5
* https://help.salesforce.com/s/articleView?id=sf.mc_overview_business_units.htm&type=5

A: Fixing the data quality issues in Service Cloud before migrating to Marketing Cloud can help avoid duplicate or incomplete contacts in Marketing Cloud, which can affect the contact count, billing, and personalization. Data quality issues can be fixed by using tools such as Data Loader, Duplicate Management, or ETL tools. C. Mapping Contact, Lead, and Account objects within Marketing Cloud can help enable personalization by using data from Service Cloud in email content or journeys. Mapping can be done by using Marketing Cloud Connect or Customer 360 Data Manager. References: https://help.salesforce.com/s/articleView?id=sf.mc_co_sync_leads_and_contacts.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.mc_co_subscriber_key_migration.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.mc_co_map_salesforce_objects.htm&type=5

Syncing Person Account object can help map subscriber data in Marketing Cloud when the company has Person Account set up on their Sales Cloud. This can enable bi-directional data integration between Sales Cloud and Marketing Cloud for Person Accounts, which are records that combine both Account and Contact information for individuals. Reference:
https://help.salesforce.com/s/articleView?id=sf.mc_co_person_accounts.htm&type=5