Question

which federal agency is responsible for the preservation of unimpaired natural and cultural resources? national park service u.s. forest service bureau of land management u.s. fish and wildlife service

Explanation:

The National Park Service's core mission is to preserve unimpaired natural and cultural resources for present and future generations, which matches the question's description. The other agencies have different primary focuses: the U.S. Forest Service emphasizes sustainable forest use, the Bureau of Land Management manages multiple-use public lands, and the U.S. Fish and Wildlife Service focuses on fish, wildlife, and their habitats.

Answer:

A. National Park Service