Answer: Vicarious liability
Explanation: It refers to a situation when a person is held liable for wrong actions of some other person. This doctrine is usually used in workplace contexts. If an employee do something illegal then the employer could be held liable for that employees actions, given that the action is taken in course of employment.
In the given case, Owen will be held liable as the wrongful conduct of serving alcohol to the minor is done by his employee and on his workplace.
Hence from the above we can conclude that the correct option is C.