What constitutes engaging in prostitution legally?

Engaging in prostitution legally is defined by the act of exchanging sexual conduct for a fee. This exchange typically involves a mutual understanding or agreement where one party provides sexual services in return for compensation, commonly understood as payment or a fee. This definition emphasizes the transactional nature of prostitution, making the exchange of money or consideration a key aspect of the act.

In this context, the idea of compensation is central; it highlights that monetary reward is integral to the definition. The legal implications surrounding prostitution often involve not just the act itself but also the methods of solicitation, enforcement, and the surrounding social and moral attitudes.

The other options do not meet the legal definition of prostitution, as they either omit the component of compensation or suggest an absence of agreement, both of which are critical elements distinguishing prostitution from other activities.