Which Unintentional Tort would this be? I am thinking Duty of Care?

This appears to be a very usual sort of written assignment or exam question in a basic class on torts. I suggest you think carefully, make a quick outline, and write your own response. I suggest you pay particular attention to intervening and superceding issues. Also, pay attention to what the four required elements are for any tort -- duty, breach, proximate cause, damage.