Answer:
The Sierra Club supported Theodore Roosevelt's policy of creating national parks because it was agreed that the natural resources needed to be conserved for the future.
Explanation:
The Sierra Club is an American environmental organization founded in San Francisco, California, on May 28, 1892, by the nature explorer and protector John Muir. The Sierra Club is one of the oldest and largest grassroots environmental organizations and, moreover, one of the most influential. Today, the organization has around 1.4 million members. There is also a Canadian department, Sierra Club Canada. In addition to lobbying and advocacy, Sierra Club also organizes nature activities for its members, including hiking and climbing.
Several prominent American conservationists have served on the Sierra Club board of directors in the past, such as photographer Ansel Adams, judge William O. Douglas, activist and rector David Starr Jordan, writer Wallace Stegner and activists Edgar Wayburn and Paul Watson.
The Sierra Club logo is an oval with a giant sequoia in it. The current version dates from 1998, but in principle the organization has been using a round or oval seal with a sequoia since 1892. The Half Dome of Yosemite has been on it since 1894.