Question

which of the following are afforded the highest level of protection in the united states and do not allow any motorized vehicles, roadways, buildings, or concessions?
national wilderness areas
national historic sites
national mall
national parks

Explanation:

National Wilderness Areas in the US are designated to have the highest level of protection, with restrictions on motorized vehicles, roadways, buildings, and concessions to preserve natural wilderness. National Historic Sites focus on historical preservation (may have structures/roads), National Malls are urban/public spaces with infrastructure, and National Parks allow some motorized access/development.

Answer:

A. National Wilderness Areas