B. Azure AD roles
Here's why this is the correct answer:

Azure AD roles: This blade in PIM is specifically designed for managing and reviewing Azure AD role assignments, including both eligible and active assignments.
Cloud Application Administrator: This is an Azure AD role, not a resource-specific role or a custom role.
Eligibility: PIM allows you to assign users as "eligible" for roles, which means they can activate the role when needed rather than having it permanently assigned. The Azure AD roles blade is where you'd find this information.

Let's review why the other options are not correct:
A. Review access: While this blade is used in PIM, it's typically for reviewing and approving requests or conducting access reviews. It's not the primary place to identify eligible users for a specific role.
C. Privileged access groups: This is used for managing privileged access to groups, not for Azure AD roles directly.
D. Azure resources: This blade is used for managing PIM settings for Azure resource roles (like those in subscriptions or resource groups), not for Azure AD roles like Cloud Application Administrator....