Which conclusion does brutus' argument best support

Mark Anthony's life will be spared because he will be useless without Caesar.

Explanation:

While conspiring the assassination of Julius Caesar, Cassius presents his view of killing Anthony too. Brutus comes out with his argument that Anthony is just a limb of Caesar. He adds that their motive is not to cut the limbs of the Caesar but to cut his head. They wanted to kill the ill ambition of the Caesar and therefore, Anthony should not be harmed. For Brutus, the death of the Caesar was a way of preventing the Roman people from Caesar's ambitious nature.

i think its:

c. a disadvantage of the proposal is that there will be fewer people under the monarchy.

very interesting story but where is the question what is actually a question i don't understand