What is a key element of breaking or entering a building?

Breaking or entering generally involves the act of either physically breaking into a structure or unlawfully entering it without permission from the occupant or owner. The essence of this crime lies in the unauthorized nature of the entry. When consent is absent, it establishes the potential for criminal intent, which is a critical element of the offense. This unauthorized entry can be through various means, including forcefully breaking a door, climbing through a window, or even using simple invitation without consent.

The other options do not align with the legal definition of breaking or entering. Entering with consent negates the illegal aspect of the act, disguising oneself may play a role in the execution of a crime but isn't a key defining characteristic, and using a key suggests authorized access, which also does not satisfy the criteria for breaking or entering. Thus, the lack of consent defines the criminal nature of the act, making it a pivotal element.