Wells and Petty Asked Students to Listen to a Tape-Recorded

Wells and Petty asked students to listen to a tape-recorded radio editorial while testing the fit of earphone headsets.The students later said that they would have agreed more with the editorial they had heard on the tape if they had been

A) distracted and unable to listen carefully.
B) wearing the lightest,most comfortable headsets.
C) given the choice of which editorial they would hear.
D) instructed to test the headsets by nodding.