Final answer:
An "unlawful assembly" typically involves three or more people gathered with the intention of committing an unlawful act or disturbance, but this can vary by jurisdiction.
Step-by-step explanation:
The term "unlawful assembly" refers to a situation where individuals gather together with the intention of committing an unlawful act or causing a disturbance. According to many jurisdictions, the minimum number of people who must be present for an assembly to be considered unlawful is typically three or more. This is to distinguish between normal social gatherings and those with the potential for public disorder.
In some cases, the definition of an unlawful assembly and the required number of participants can vary by jurisdiction. So, the answer for a general context is b) Three or more. However, specific laws and requirements can differ from one location to another, and it is important to consult the local laws for precise definitions.