单选题 In the fourth paragraph, the author makes it clear that ______.

A、 the government which is in charge of powers such as the making of laws must conduct the current affairs of the country but also think ahead and prepare the nation of tomorrow.
B、 the nationals of any country are accountable for social choices they make.
C、 the source of supply and wealth of any country can and will be consumed entirely if proper steps are not taken.
D、 The people of any given country have a natural tendency to use unreservedly and unwisely their own resources.

【正确答案】 A

【答案解析】第四段讲的是政府的责任和政府可能采用的一些办法，提到了政府是现在以及将来人们可以信任的trustee，综合一下，和A一致。