The correct answer is D) National parks belong to all of us.
The main point the author makes in the article is "National parks belong to all of us."
We are referring to the article titled “Our Backyard Is 85 Million Acres,” written by Ken Burns and Dayton Ducan, that was published by "Time" on June 30, 2016.
After carefully reading the article, the authors write about the importance of the wonderful and impressive landscapes of the United States and make a comparison to the Declaration of Independence. They say that the "the parks are the Declaration of Independence applied to the landscape." They mention that they belong to the American people to enjoy but it is the responsability of US citizens with the aithorities to take care of them and help with its conservation.
The authors also mention the great effort of Stephen Mather and a group of supportive people that help with the creation of the National Park Service.
