John Maynard Keynes believed the government could enhance thedev

John Maynard Keynes believed the government could enhance thedevelopment of economy by（ ）.
A、limiting birthrate
B、weakening manufacturing
C、averaging household income
D、controlling spending and taxes
【正确答案】：D
【题目解析】：约翰·梅纳德·凯恩斯认为政府可以通过控制消费和税收来提高经济发展。