Which of the Following Is a Good Reason a Researcher

Multiple Choice

Which of the following is a good reason a researcher may give for using observational methods as opposed to self-report methods?

A) "I do not want to have to worry about the construct validity of my conceptual variable."
B) "I do not want to have to worry about ethics."
C) "I want to measure something that people may not know how often they do it."
D) "I want to make a causal claim."