When an account is deleted, any related opportunities are also deleted, unless they are closed or have a contract associated with them.

Declarative tools in Salesforce allow for process automation without the need for code. These tools, such as Process Builder, Flow Builder, and Approval Processes, enable users to configure automation that spans multiple divisions like sales and service. This approach is user-friendly, cost-effective, and faster to implement compared to programmatic solutions.
* B. Programmatic: Programmatic approaches (e.g., Apex code) should be used when declarative tools cannot meet specific complex requirements.
* C. Third-party consulting services: While consulting services may assist with implementation, exploring Salesforce's native tools should be the first approach.
References from Salesforce Documentation:
* Declarative vs. Programmatic Development
* Process Automation Overview

The role of each of these companies is as follows:
* Get Cloudy Consulting - Customer: GCC is the customer of Salesforce, which means it uses Salesforce products and services to run its business.
* Connected Mail - Independent Software Vendor (ISV): Connected Mail is an ISV, which means it develops and sells applications that are built on the Salesforce platform and are available on the AppExchange.
* United Clouds - Partner: United Clouds is a partner of Salesforce, which means it provides consulting, implementation, integration, or training services to help customers succeed with Salesforce.