Which of the following is a doctrine available to defendants whereby a defendant may avoid liability by establishing that the plaintiff voluntarily and unreasonably encountered the risk of theactual harm that the defendant caused?

A. Last-clear-chance doctrine.
B. Assumption of the risk doctrine.
C. Contributory negligence doctrine.
D. Res ipsa loquitur.
E. Negligence per se

B.Assumption of the risk doctrine.

Explanation:

B is the correct answer because according to that doctrine someone is voluntarily encountering the risk therefore cannot sue the defendant. For eg alot of places do this where injury can occur like scuba diving, skating complexes, bungee jumping, and other sports. Because as a participant you know that you might encounter a risk but you are doing it voluntarily hence you cannot sue for any liabilities.