If the research is subject to subpart d, which of the following research activities with children would qualify for an exemption under category 2 (research that includes educational tests, surveys, interviews, observation)?
a. observation of public behavior when the researcher participates in the activities being observedb. survey proceduresc. research about aptitude testingd. interviews

c. Research about aptitude testing

Explanation:

Exemption means not to qualify for the requirements to the common rule.

The IRB states that there are certain research studies which includes children as subjects can be exempted under category 2 if the research study is subjected to the Subpart D of the IRB rule. However IRB does not permit any exemption if it includes any  identifiable  information but is reviewed under the limited IRB review.

Such study which permits exemption under category 2 includes research done on children about aptitude testing.