问题如下：
If over a long period of time a country’s average level of educational accomplishment increases, this development would most likely lead to the country’s amount of income spent on consumer discretionary goods to:
选项：
A.decrease.
B.increase.
C.not change.
解释：
B is correct.
As their educational level increases, workers are able to perform more skilled tasks, earn higher wages, and as a result, have more income left for discretionary expenditures.
教育是必要支出，必要支出加大非必要支出不是减少吗？
