Well first that all black people look alike meaning we're all related
The answer would be letter D. The active voice states the doer of the action, the action and the receiver of the action.
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"His mind was crowded with memories; memories of the knowledge that had come to them when they closed in on the struggling pig, knowledge that they had outwitted a living thing, imposed their will upon it, taken away its life like a long satisfying drink."
I think the answer is C
Good luck!