The correct answer is A from the available options, because the requirement is to control which user actions are exposed to different roles during the Medical Inquiry lifecycle. Salesforce Help for Medical Inquiries states that organizations can define relevant workflow actions for tasks users perform in the medical inquiry process, such as inquiry submission and assignment. Salesforce also describes a compliant role separation where field sales reps can submit medical inquiries, while Medical Science Liaisons can assign and respond to them.

The ideal Salesforce Life Sciences configuration pattern is to use Medical Inquiry workflow actions and workflow paths to control status transitions, actions, and permissions. However, among the provided answer choices, record types with role-specific page layouts is the only option that directly supports restricting the available buttons and actions by user role. This enables sales users to see only draft, sign, and submit actions, while MSL users see only assignment and response actions.

Option B is incorrect because a formula field can calculate or display logic, but it cannot enforce workflow actions or user interaction permissions by itself. Option C is also incorrect because a Flow action could add custom logic, but it is not the standard configuration approach for restricting Medical Inquiry lifecycle actions. Therefore, the best available answer is A .

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