Which of the following is an exception to the rule of strict liability?

Answer: Option B

In the rule of strict liability, a defendant can be held liable for harm or damage caused by their actions, even if they took all possible precautions and were not negligent. However, certain exceptions exist to this rule, and one of them is statutory authority. When a defendant's actions are authorized or required by law, such as a government agency or a specific statute, the defendant may be exempt from strict liability for any resulting harm or damage.

Option A: Defendant's own fault
This option is incorrect. The rule of strict liability does not generally consider the defendant's own fault as a defense. Strict liability applies irrespective of the defendant's fault or negligence.

Option C: Consent of third party
This option is incorrect. The consent of a third party is not typically considered an exception to the rule of strict liability. Strict liability focuses on the inherent risks and potential harm caused by certain activities, regardless of third-party consent.

Option D: Act of defendant
This option is incorrect. The term "act of defendant" is not specific enough to explain an exception to the rule of strict liability. Strict liability pertains to the liability arising from certain activities, regardless of the defendant's specific actions.

The correct answer is Option B: Statutory authority, as it is an exception to the rule of strict liability in tort law.