What constitutes "self-defense" legally?

The concept of "self-defense" legally refers to the right to use reasonable force to protect oneself from an imminent threat of harm. This definition emphasizes that the force used must be proportional to the threat faced, and it must occur in a situation where there is an immediate danger. The primary focus of self-defense is to ensure personal safety and protect against unlawful aggression.

In contrast, the other options do not accurately capture the legal framework surrounding self-defense. Retaliation, seeking revenge, or restricting oneself solely to non-lethal methods do not align with the legal understanding of self-defense, which prioritizes the protection of oneself from immediate harm over other considerations. Therefore, the definition provided highlights the essential legal principles that allow individuals to defend themselves in the face of danger effectively.