Mistake of fact defenses require which belief?

• A. Honest and reasonable assessment of the circumstances
• B. The defendant's mistake must be the same as the law
• C. Mistake must be due to intoxication
• D. Mistake is a misinterpretation of the rule

Answer: (A)

Mistake of fact defenses hinge on the good faith belief the defendant had about a factual situation that would negate a required mental element of the crime. For this defense to work, that belief must be honest—truly held by the defendant—and reasonable given what the circumstances were. If the belief is either not sincere or clearly unreasonable, the defense doesn't apply. For example, if you take property believing it’s yours and that belief is honestly held and reasonable under the circumstances, it can negate the intent required for theft. But if the belief is reckless or plainly unlikely, the defense fails.