Which of the following is NOT a legal defense?

Negligence is considered a legal concept primarily relevant in civil law rather than as a defense in criminal law. It typically pertains to situations where a person's failure to exercise reasonable care results in harm to another party. In essence, negligence involves a breach of duty leading to unintentional harm, which is fundamentally different from the context of legal defenses used in criminal cases.

In contrast, defenses such as self-defense, entrapment, and mistake of fact are valid legal defenses in criminal law. Self-defense allows an individual to justify their use of force in response to an immediate threat against them. Entrapment addresses situations where law enforcement induces a person to commit a crime they would not have otherwise committed. Mistake of fact involves a misunderstanding or incorrect belief about a fact that negates criminal intent. Each of these defenses can absolve individuals of liability if successfully argued in court, which highlights why negligence does not fit as a legal defense in this context.