What technique, when done scientifically, gathers self-reported attitudes or behaviors of people by questioning them randomly and representatively?

survey

Explanation:

A survey is a research method of collecting information from a sample of people, to obtain information and insights on various topics. A survey includes seeking information from a large population through a questionnaire, which can be distributed on paper or new technologies using digital media such as social networks, etc to generalize the results.

answer; the correct answer is (d) binge eating followed by compensatory behavior;