Which item provides the description of the population to be studied in the context of Background Information?

• A. The Investigator's brochure
• B. The audit plan
• C. The adverse event reporting plan
• D. Description of the population to be studied

Answer: (D)

Background Information should include a description of who will be studied, outlining the characteristics of the population, including relevant disease state and key demographics, so readers understand the study’s scope and relevance. The document that provides this exact information is the description of the population to be studied, because it explicitly states who is being studied and what defines that group, which is essential for assessing eligibility and applicability of results.

The other items serve different roles: the Investigator's brochure covers the investigational product’s properties, safety, and efficacy; the audit plan describes how the study will be reviewed for compliance; and the adverse event reporting plan explains how adverse events are identified and reported. None of these describe the study population.