Which of the following best defines prostitution?

Engaging in sexual activity for hire is the best definition of prostitution because it captures the essence of the act itself—exchanging sexual services for monetary compensation. This definition is widely recognized in legal terms and encompasses the core components of prostitution: the exchange of sexual acts for payment, which establishes a clear understanding of the behavior being defined.

The other options focus on different actions that do not pertain to the practice of prostitution. Fleeing custody relates to evading law enforcement and is a separate criminal action. Attempting to stop an officer from making an arrest involves resisting law enforcement, while soliciting someone to engage in sexual activity, while related, is more about the act of offering or requesting rather than the actual exchange that defines prostitution. Thus, the selected answer is the most accurate and comprehensive definition among the choices provided.