What amendment obligates giving a warning before using deadly force when feasible?

The Fourth Amendment is the correct choice because it primarily deals with the protection against unreasonable searches and seizures and emphasizes the right to be secure in one's person. Within the context of law enforcement, the Fourth Amendment establishes standards for the use of force, particularly in situations involving a person's liberty and safety.

When officers face a potentially dangerous situation, the Fourth Amendment necessitates that officers provide a warning before the use of deadly force, if such a warning is feasible under the circumstances. This principle is aimed at preserving life and minimizing the need for lethal force whenever possible. The requirement for a warning is rooted in the idea that individuals should have a chance to comply with an officer's commands before extreme measures are taken.

Understanding this amendment is crucial for law enforcement officers as it guides their decisions in the field, ensuring that their actions align with constitutional protections and help to maintain public trust in the police.