What characterizes a crime of omission?

A crime of omission is characterized by the failure to perform a duty that is mandated by law. This means that when an individual is legally obligated to act, such as providing assistance to someone in danger or fulfilling responsibilities as a caregiver, the lack of action can be deemed criminal. The essence of a crime of omission lies in the legal requirement to take specific action, which, when neglected, results in a violation of the law. This concept underscores the idea that certain legal duties exist, and an individual's inaction in fulfilling those duties can lead to criminal liability.

The other choices reflect actions or intentions that do not align with the definition of a crime of omission. For instance, performing an act that is legally required would be the opposite of failing to act, while committing a crime with intention pertains more to acts of commission rather than omission. Voluntary withdrawal from criminal activity suggests a decision not to continue a crime, which again does not relate to failing to fulfill a legal duty. Thus, the correct choice aptly captures the essence of what constitutes a crime of omission.