What does the term "trespassing" mean?

Trespassing refers to the act of entering someone else's property without the owner’s explicit permission. This concept is rooted in property rights, where landowners have the legal authority to control access to their property. When a person enters the property without authorization, they infringe upon the rights of the owner, potentially causing damage or posing security risks. This is why option B accurately defines trespassing, as it emphasizes the lack of permission.

The other options do not align with the legal definition of trespassing. For instance, entering property with permission clearly does not constitute trespassing. Being present in a building after hours may or may not involve trespassing; it depends on whether the individual had prior authorization. Similarly, using the property for commercial purposes without consent could relate to unauthorized use, but this is a separate legal issue concerning property usage rights rather than trespass itself.