I would say it's a simile because they are comparing with using the word "like". They are comparing there howling to the wolves.
The answer is B.Round. A round character is a complex character that often undergoes change and character development. While round characters are often main characters, this is not always the case and therefore the answer cannot be A, C or D.
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>
