Question

what is a strategic mineral?
a nonmetallic resource
one that must be imported to the united states
one that is exported from the united states
one that is easily removed from the ground

Explanation:

A strategic mineral is defined as a resource critical to a nation's economy, security, or infrastructure that the country cannot produce enough of domestically, requiring imports. Among the options, this matches the description of a mineral that must be imported to the United States. The other options are incorrect: strategic minerals can be metallic or nonmetallic, they are not defined by export status, and ease of extraction is irrelevant to their strategic classification.

Answer:

one that must be imported to the United States