Final answer:
Lee committed the tort of battery, as his actions involved intentional and unwanted physical contact with Brian, which is legally defined as unlawful touching without consent.
Step-by-step explanation:
The incident described in the question constitutes the tort of battery, which is intentional and wrongful physical contact with another person without their consent. In legal terms, a battery is any unlawful touching of the person of another by the aggressor himself, or any substance put in motion by him.
Since Lee touched Brian's crotch without Brian's consent after being told no multiple times, this action can be legally considered battery. Defamation involves harm to someone's reputation through false statements, trespass typically refers to unlawful entry onto someone else’s property, and interference with a prospective advantage involves unlawfully disrupting someone's business relationships or economic interests. None of these definitions apply to this situation. The correct statement is that Lee committed the tort of battery, as it involved intentional and unwanted physical contact.