Why does Keller include this sentence in describing her feelings in the moments before meeting Sullivan

What does brutus say that anticipates the question of why the crowd should listen to mark antony? o a. not that i lov'd caesar less, but that i lov'd rome more. o b. and, for my sake, stay here with antony. do grace to caesar's corpse, and grace his speech. o c. i thrice presented him a kingly crown, / which he did thrice refuse. was this ambition? od. i come to bury caesar, not to praise him.