Persistent sexually arousing fantasies and behaviors involving the suffering of self or others are an indication of

A) erotic plasticity.
B) a refractory period.
C) premature ejaculation.
D) a paraphilia.

Persistent sexually arousing fantasies and behaviors involving the suffering of self or others are a symptom of a paraphilia, which is a condition in which a person's sexual arousal and gratification depend on fantasizing about and engaging in behavior that is atypical and extreme. Examples of paraphilias include exhibitionism, voyeurism, sadomasochism, and pedophilia. These behaviors can be harmful to the individual and may also be illegal.