Question

which type of descriptive research might include in - depth interviews with the person being studied and friends, family, and coworkers and questionnaires about medical history, career, and mental health? a representative sample naturalistic observation a case study laboratory settings

Explanation:

A case study is a descriptive research method that involves in-depth, focused investigation of a single individual (or small group), often including interviews with their associates and detailed questionnaires covering personal, medical, and professional background. The other options do not match: a representative sample refers to a subset of a population, naturalistic observation involves watching subjects in their natural environment, and laboratory settings are controlled research environments, not a descriptive research type focused on this kind of deep individual investigation.

Answer:

a case study