In terms of volume, which of the following sedimentary resources is the most used in the United States?

A) sand and gravel
B) uranium
C) salt
D) diamonds

Gravel

A loose aggregation of rock fragments, pebbles, and small stones, often used in construction and as a surface material for roads and driveways.

Uranium

A dense, metallic element used as fuel in nuclear reactors and as a component in nuclear weapons, known for its radioactive properties.