Under what circumstance can a non-peace officer use deadly force during an arrest?

The correct answer is grounded in the principles of self-defense and the justification for the use of force in specific situations. A non-peace officer can only use deadly force during an arrest when they believe that such force is immediately necessary to prevent imminent death or serious bodily injury to themselves or others. This requirement ensures that the use of deadly force is a last resort, reserved for circumstances where there is a clear and present danger that cannot be mitigated through less drastic means.

Believing that the use of deadly force is immediately necessary takes precedence over other considerations, focusing on the imminent threat rather than the legality of the arrest itself or the perceived threat level posed by the arrestee. This aligns with legal standards surrounding the use of force, emphasizing the need for an immediate and unavoidable threat to justify such extreme measures in non-peace officer contexts.