A person could be liable for the tort of trespass

A) if, in the middle of the night, he was carried onto the neighbour's property and thrown in their pool.
B) if he lost control of his bike and accidentally went onto his neighbour's property and into their pool.
C) if he stood in his neighbour's driveway and threw a tire in their pool.
D) if he swam in his neighbour's pool with the owners' permission.
E) if he delivered a package to the owner at the poolside as instructed by the owner.

Trespass to land occurs when a person intentionally enters someone else's property without permission or causes an object to do so. In option C, throwing a tire into the neighbor's pool is an intentional act that results in an object (the tire) entering the neighbor's property without permission, constituting trespass. Options A and B involve accidents and lack of intent, D involves permission from the owner, and E also involves actions taken with the owner's consent, thus not constituting trespass.