Economist: Our economy' s weakness is the direct result of consumers' continued reluctance to spend, which in turn is caused by factors such as high-priced goods and services. This reluctance is exacerbated by the fact that the average income is significantly lower than it was five years ago. Thus, even though it is not a perfect solution, if the government were to lower income taxes, the economy would improve. Which one of the following is an assumption required by the economist's argument?
A: Lowering income taxes will have no effect on government spending.
B: Increasing consumer spending will cause prices for goods and services to decrease.
C: If income taxes are not lowered, consumers' wages will decline even further.
D: Consumers will be less reluctant to spend money if income taxes are lowered.
Choose A, B, C or D as your solution.
D