A 30-year-old male has recurrent sexual arousal by cross-dressing in women’s clothes. This is best classified as:

Correct option is B

Transvestic fetishism = recurrent sexual arousal by cross-dressing. It is a paraphilic disorder, different from gender identity disorders like gender dysphoria.
Explanation of options: (a) ✘ Exhibitionism = exposing genitals to strangers for arousal. (b) ✔ Correct; transvestic fetishism = arousal by cross-dressing. (c) ✘ Gender dysphoria = distress from mismatch between biological sex and gender identity, not fetishistic arousal. (d) ✘ Voyeurism = observing others undressing/sexual acts without consent.