Answer:
The correct answer is D.
Step-by-step explanation:
In his speech, Brutus expresses his concerns that, if he were to be crowned king, Caesar might change his nature and abuse his position.
In the sentence "Crown him that, and then I grant we put a sting in him that at his will he may do danger with," he tries to convey the idea that, by crowning him, they would be given him a power that could be used wrongly to do harm.