During a trial, what type of personnel should be readily available to address trial-related medical questions?

• A. Security personnel
• B. Public relations staff
• C. Trial participants
• D. Medical personnel who can advise on specific trial-related medical questions or problems

Answer: (D)

Access to qualified medical personnel is essential because they can promptly address any trial-related medical questions, manage adverse events, advise on dosing and safety, assess causality, and guide decisions per the protocol. This ensures participant safety and data integrity. Security personnel, public relations staff, or trial participants cannot provide the medical judgment needed for clinical decisions, so they are not appropriate substitutes for addressing medical questions.