Final answer:
The individual who is not homosexual but prefers to dress in feminine clothing is engaging in Transvestism, which is unrelated to sexual orientation and a personal form of gender expression.
Step-by-step explanation:
A client explains that he is not homosexual but that he prefers to dress in feminine clothing. This behavior characterizes Transvestism (D), which is a practice where individuals, irrespective of their sexual orientation, wear clothes that are traditionally associated with the opposite gender. Transvestism is not the same as homosexuality, which relates to a person's physical, mental, emotional, and sexual attraction to people of the same sex. Cross-dresser is a term often used for people who engage in transvestism, and this does not necessarily indicate their sexual orientation or gender identity. This form of gender expression is a part of an individual's personal style or self-expression.