Which Type of Cheating Is Most Detectable with Normal Validation

Multiple Choice

Which type of cheating is most detectable with normal validation procedures?

A) The interviewer asks only the key questions and fills in the remaining information later.
B) The interviewer interviews respondents in groups rather than separately as instructed.
C) The interviewer fabricates the whole interview.
D) The interviewer interviews the "wrong" respondent because the designated respondent is unavailable.
E) The interviewer employs one contact for information for two separate studies and thereby introduces contamination through respondent fatigue.