Which entity administers the lands classified as "On National Forest"?

The entity that administers the lands classified as "On National Forest" is the U.S. Forest Service. This agency is specifically tasked with managing national forests and grasslands, focusing on the conservation and sustainable use of the resources within these areas. The U.S. Forest Service is part of the U.S. Department of Agriculture and is responsible for a wide array of activities, including recreational use, forestry practices, wildlife management, and fire prevention, among others.

This distinction is important because other agencies mentioned have different mandates and focus areas. The National Park Service, for instance, manages national parks and historical sites, promoting conservation and public enjoyment while safeguarding natural and cultural resources. The U.S. Fish and Wildlife Service focuses primarily on wildlife conservation and habitat restoration, while the Bureau of Land Management oversees a variety of public lands, primarily in the western United States, but does not manage national forests. Thus, the U.S. Forest Service is the correct answer as it directly oversees the specific category of land in question.