One should not play a practical joke on someone if it shows contempt for that person or if one believes it might bring significant harm to that person.
Principles
Practical joke shows contempt for the target shouldn't play or → the practical joke Joker thinks joke might significantly harm target
Evaluation / Goal
This rule can only prove that you shouldn't play a practical joke, so we'll quickly get rid of any answer choices that try to conclude you should play one.
Since the principle has "or" in the trigger, we only need one of the criterion to be me to safely conclude that someone shouldn't play (have played) a practical joke.