The correct answer is a:
Et tu, Brute?
it means "you too, Brutus" and refers to the fact that he did not expect Brutus to be against him like the other people.
The answer would be:
<span>Tubman used logos most effectively. She told the group facts about the risks of returning to the plantation, explaining the risks for all involved. She explained that they would have to choose between freedom and death. She wanted them to know that returning wasn't an option.</span>
