To Test Whether Hypnotized Subjects Might Do Anything They Would

To test whether hypnotized subjects might do anything they would ordinarily refuse to do,a researcher asked hypnotized people to pick up a venomous snake and to do other dangerous acts.Why were the results difficult to interpret?​

A) Although they did the dangerous acts, so did many people who were not hypnotized.
B) ​Although they did the dangerous acts, most of these participants were mental patients.
C) ​Although they refused to do the dangerous acts, they were not deeply hypnotized.
D) ​Although they refused to do the dangerous acts, the hypnotist was not trying very hard.