The nurse is discussing about threats to adult safety with a college group. Which statement by a group member indicates understanding of the topic?

A) "Smoking even at parties is not good for my body."
B) "Our campus is safe; we leave our dorms unlocked all the time."
C) "As long as I have only two drinks, I can still be the designated driver."
D) "I am young, so I can work nights and go to school with 2 hours' sleep."