Final answer:
The term to use when setting up a Dev Sandbox with specific credentials is 'Connection' as 'Admin'. This is because a connection allows a developer or an administrator to access and manage a development environment without affecting the live system.
Step-by-step explanation:
The question you've asked is related to setting up a Dev Sandbox with a specific set of credentials. In environments like these, the correct terminology to use would be 'Connection' with the Dev Sandbox Credential as 'Admin'.
A connection in a development sandbox environment means establishing a link or access between the developer's operations and the sandbox instance, allowing the developer or administrator to manage, configure, and test applications in an isolated environment. This helps prevent unwanted changes to the live production system. Therefore, the correct answer to the question is A) Connection; Admin.