Final answer:
An unexcused violation of an applicable statute that injures another person causes a tortfeasor to be guilty of Negligence per se.
Step-by-step explanation:
An unexcused violation of an applicable statute that injures another person causes a tortfeasor to be guilty of Negligence per se. Negligence per se is a legal doctrine where a person is considered negligent automatically if they violate a statute or regulation that is meant to protect others from harm. In this case, the violation of the applicable statute that caused injury to another person would make the tortfeasor guilty of negligence per se.