What principle states that willing participants cannot claim for injuries?

The principle of "Volenti Non Fit Injuria" translates to "to a willing person, injury is not done." This legal doctrine applies primarily in tort law and asserts that if an individual willingly engages in an activity, they are accepting the inherent risks associated with it and, as such, cannot claim compensation for any injuries that occur as a result of that activity.

This means that for a person to invoke this principle successfully, they must have voluntarily consented to the risk involved. In contexts such as sports or adventure activities, participants are often made aware of the potential dangers, and their consent to engage in those activities implies acceptance of the risks. Thus, if they suffer injuries during participation, the principle shields the responsible party from being held liable.

In contrast, the other options pertain to different legal concepts. "Res Ipsa Loquitur" refers to a situation where the occurrence of an accident implies negligence. "Mens Rea" deals with the mental state of a person at the time of committing a crime, indicating intent or knowledge. "Actus Reus" simply refers to the physical act or conduct that constitutes a criminal offense. These concepts do not relate to the acceptance of risk and injuries in the manner that "Volenti