3) If, During an Experiment, a Participant Expresses Discomfort and Wishes

3) If, during an experiment, a participant expresses discomfort and wishes to leave the researcher should:

A) Permit the participant to leave once they have finished any procedure or trial that they are in the middle of
B) Permit the participant to leave immediately and offer a debrief
C) Try to persuade the participant to carry on with assurances that nothing bad can actually happen to them
D) Permit the participant to leave after warning them that the research will be harmed by their withdrawal