Which of the following behaviors is lawful?

Touching someone with consent is lawful because consent signifies that the individual has willingly agreed to the action. Consent is a fundamental principle in law, particularly concerning personal interactions. It reflects respect for personal autonomy and ensures that individuals have control over their own bodies and choices. When one person gives explicit or implied consent for another to touch them, it establishes a legal and ethical framework that validates the interaction, making it permissible within social and legal standards.

In contrast, touching someone without consent is considered unlawful, as it violates the other person's bodily autonomy and can be deemed an act of aggression or assault. Forcing someone to touch another person also infringes upon personal rights and can be classified as a form of coercion or abuse. Encouraging someone to touch their own body, while it may not necessarily breach legal standards, can raise ethical concerns depending on the context and the nature of the encouragement, particularly if it involves coercion or manipulation. Therefore, the act of consensual touching upholds the integrity of personal choice and is recognized as lawful behavior.