Option (a) and (e) fall under the category of minimal risks
Work Step by Step
A minimal risk is defined as the risk that is not greater than this risks of ordinary life like hair clipping and nail clipping.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.