Answer: -4a+4b
Explanation: This question is essentially asking you to distribute, and find the choice that matches your answer. When distributing in this equation, it is important to remember that the number outside of the parentheses is a -1, even if only a - sign is shown. -(4a-4b) is going to be distributed by multiplying -1•4a and -1•-4b. Keep in mind that when multiplying, a negative and a positive equals a negative, and a negative and a negative equals a positive. By doing so, your final result will be -4a+4b.
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