Answer:
Meager.
Explanation:
The word "poor" can have different connotations. Some of them include the condition of having hardly anything, the condition of being economically/ financially weak, or of inferior quality, etc.
But as used by Hamlet in William Shakespeare's "Hamlet", the "poor" in this case means a meager, small favor or request. Hamlet is requesting his friends to do a favor for him, that is to not reveal what happened that night to anyone.
Thus, the correct answer is meager.
