Anika is studying human sexuality. in answer to her question, "how do you differentiate coercive from noncoercive paraphilias?" you correctly respond:

The response should be "Coercive paraphilias involve victimization and cause harm to others."

The core difference between coercive and non-coercive paraphilias lies in the consent between those who involved. In non-coercive paraphilias, all the people involved are both consenting with the activities and find a certain enjoyment/reward from the act.