What is the standard for the use of nondeadly force by a defendant in relation to the force used by a plaintiff?

The correct standard for the use of nondeadly force by a defendant in relation to the force used by a plaintiff is that the force must be about the same degree as that used by the plaintiff. This principle is rooted in the concept of proportionality in self-defense and the use of force in general. In tort law, particularly in cases involving battery or self-defense, the defending party is entitled to use reasonable force to protect themselves, but that force must not exceed what is considered necessary to repel the threat posed by the plaintiff.

This standard recognizes that while an individual has the right to defend themselves against aggression, the response should be proportionate to the amount of force being used against them. If the plaintiff initiates a nondeadly attack, the defendant may respond with a reasonable amount of nondeadly force to defend themselves, but excessive force could lead to an escalation of the situation or result in additional liability for the defendant.

Other options present misunderstandings of the standard. The idea that a defendant can use any amount of force necessary does not limit the response to nondeadly force and could justify excessive or unreasonable responses. Having to use more force than the plaintiff fails to account for the need for proportionality and reasonableness in defensive actions.