Does the author provide sufficient support for the claim that Pinchot and Muir were "the founding fathers of America's public lands"? A
Yes, because the author provides many details about changes that occurred because of the efforts of Pinchot and Muir.
B
Yes, because the author shows that Pinchot and Muir both held important leadership roles in caring for the national parks.
C
No, because the author does not show that the National Parks would not have been created without Pinchot and Muir.
D
No, because the author does not provide enough proof that Pinchot and Muir were successful in what they were attempting to do.