I believe the answer is B- I know you have a busy schedule, but maybe you could fit in our event.
Answer: an adverb .
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(Note: Adverbs can modify other adverbs.).
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In this sentence it is an adverb :)
Answer choices 4 and 3 are correct. A decrease in price attracts more customers, therefore an increase in the demand for that item. An increase in price will mkae customers less likely to buy the item, therefore a decrease in demand.