What does the term "Failure to Report" refer to in a legal context?

The term "Failure to Report" in a legal context primarily refers to the obligation of individuals to report known criminal activity to the authorities. This concept is particularly relevant when someone is aware of a crime occurring or about to occur and does not take the appropriate actions to inform law enforcement. This is important in maintaining public safety and aiding law enforcement in their duties to prevent and investigate crimes.

While failing to assist an officer, not reporting a vehicle accident, or ignoring a call for help are also serious actions or omissions potentially with legal implications, they do not encompass the legal obligation of reporting criminal activities that is captured in the term "Failure to Report." This distinction makes option C the most accurate answer, as it highlights the responsibility individuals may bear when they have knowledge of a crime and choose not to report it.