Interest has no impact because most credit cards do not charge interest.
The Effect of Interest Rates on Consumer Behavior Interest rates impact the cost of borrowing money as well as the returns that savers can earn on their investments. An interest rate is the amount of interest due per period, as a proportion of the amount lent, deposited, or borrowed. When interest rates are high, some loans become too costly and borrower demand may lessen, which reduces the total consumption of loans. Conversely, when interest rates drop, consumers take advantage of the lower loan rates, which increases demand for loan products.
The correct answer is D.
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