The correct answer is D) to manage public lands.
The major responsibility of the Department of the Interior is to manage public lands.
The Department of the Interior is part of the executive branch and is dedicated to the protection and conservation of the natural resources of the United States. It was created on March 3, 1849, to protect the federal land because it represents a patrimony to the citizens of the country. The Secretary of the Interior counsels the President as part of his cabinet.
