What are the legal and policy conditions for using deadly force?

• A. To punish a suspect after capture.
• B. To protect life or prevent imminent serious harm when lesser means are ineffective or unavailable.
• C. Whenever a suspect resists arrest.
• D. On a ship for any threat.

Answer: (B)

The situation this question tests is when deadly force is legally and policy-appropriate. It is allowed only to protect life or prevent imminent serious harm, and only when no lesser means can reasonably stop the threat. That means the threat must be real and immediate, and the response must be proportionate to the danger. You also have to show that you acted out of necessity, with a reasonable belief that deadly force was necessary to prevent the harm, and you should try lesser options first if feasible. In practice this means giving warnings and using non-lethal measures whenever possible, and resorting to deadly force only as a last resort when there is no safe alternative to prevent a grave outcome.