Laud Humphreys's Research on Homosexual Activities in Men's Restrooms Became

Multiple Choice

Laud Humphreys's research on homosexual activities in men's restrooms became a famous case of ethical controversy in social scientific research. What about Humphreys's research was ethically questionable?

A) Humphreys told research participants he was a sociologist.
B) Humphreys was not a homosexual.
C) Humphreys used license plate numbers to target their homes and interview the men without disclosing the real subject of his study.
D) Humphreys asked individuals to participate in his study.