Option B is correct because Salesforce Life Sciences Medical Inquiries uses workflow actions and persona/profile-based configuration to control who can perform specific inquiry actions, such as assigning and responding. Salesforce Help states that, before setting up Medical Inquiry, admins must make sure the required user profiles, licenses, and permission sets are in place. It also describes that medical science liaisons can assign and respond to inquiries, which confirms that these actions are intended to be controlled by role or persona.

Salesforce’s Life Sciences workflow documentation also identifies workflow actions and workflow stages as part of the Medical Inquiry management setup. The Medical Inquiries workflow setup includes action buttons, workflow stages, stage operations, and conditions, allowing admins to expose or restrict actions based on configured roles and workflow state.

Option A is not the best answer because the requirement is not simply to grant a broad app permission; it is to ensure that only a designated persona can perform the assign and respond actions in the controlled Medical Inquiry process. Option C is incorrect because a custom formula field only affects display logic and does not enforce the standard workflow-action permission model. Formula-based visibility also creates compliance risk because it can hide buttons without truly governing the underlying operation. Therefore, the consultant should create workflow actions and associate those actions with the appropriate profiles in the Life Sciences Admin Console.

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