Opal could successfully sue Nick for Guilty of Negligence.
In the very first place,when you see a person drowning, it's in your mind to save or let them be. The person drowning may die if not saved immediately and it will be in your conscience if you were not able to save them. You know that the situation is dire but you choose nothing to do about it then maybe you'll get sued for negligence.
I believe the answer is: Obedience
In the experiment, a test subject is being made to sit with someone that he/she regarded to has high authority.
The authority then tell the subject to press a button that would cause electric shock to other people. and the subject was being told the limit that could cause danger to other people.
As it turned out, test subjects tend to obey the authority even if being told to give shock that exceed the dangerous limit.
A is the answer for this question for this one large numbers of people...
