Answer:
opportunity costs are the alternative choice in which you could make when making a financial decision while a trade-off is something that you could switch out in order to make a different decision
Answer:
B
Explanation:
The answer is B because the sentence shifts from past tense to some sort of present tense in which "resisted" does not work or sound well.
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A.
Girls do not know how to be friendly with one another.
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Increase in amount could be one