Aaron wanted to study the level of altruism among adults. However, he realizes that letting research participants know about the true purpose of the study will significantly affect the validity of the results. In this case, in order to comply with the APA ethics guidelines and ensure validity at the same time, Aaron should .
A) disclose the true purpose of the study to a few participants. B) avoid informing the participants about the risks associated with the study. C) debrief participants after the study is complete. D) share the data gathered on participants with nonparticipants.

.C) debrief participants after the study is complete.

Explanation:

Generally based on APA ethics guidelines ,Psychologists are mandated to provide detail information to the research participants. This is needed to protect the research participants from any harm, to respect  their rights and dignity.

In this case the participant s should be debriefed by Aron , to allay any fear or misconception about the research, and to provide them with sound knowledge and dignity. With this practise Aron  made them to realize the value of the time spent for the research.Thus as the participant are leaving the research lab. they are filled with the same mindset that they had before submission for the research-anxiety is removed.

im sure he will be? ?

answer (c) by causing social withdrawal;