"We have become great because of the lavish use of our resources. But the time has come to inquire seriously what will happen when our forests are gone, when the coal, the iron, the oil, and the gas are exhausted, when
the soils have still further impoverished and washed into the streams, polluting the rivers, denuding the fields
and obstructing navigation."
The concerns expressed by Roosevelt in this quotation led him to focus on which of the following as president of the
United States?
A)
expanding the power of the federal government to strictly regulate
business activity
B)
taking advantage of America's natural resources to promote industrial
development
the creation of a federal agency designed to protect human health and the
environment
D)
the establishment of a national park system to protect the wilderness and
preserve resources

The correct answer is D. The establishment of a national park system to protect the wilderness and preserve resources.

Explanation

According to the fragment of the question, it can be affirmed that the concerns expressed by Roosevelt in it led him to focus on the objective of preserving the natural resources that the United States had and had been exploited without the control they deserved. For example, Franklin D. Roosevelt expresses concern by asking "what will happen when our forests are gone, when the coal, the iron, the oil, and the gas are exhausted, when the soils have still further impoverished and washed into the streams, polluting the rivers, denuding the fields and obstructing navigation". Therefore, Franklin D. Roosevelt established the Single System of National Parks on June 10, 1933, as President of the United States. Therefore, the correct answer is D. The establishment of a national park system to protect the wilderness and preserve resources.

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )