Question

what is the most precise geological term for a natural rock or sediment deposit from which one or more valuable minerals can be extracted profitably, based on factors such as grade, market value, and the cost of extraction. ore mineral reserve gangue placer deposit

Explanation:

Ore is defined as a natural rock or sediment deposit from which one or more valuable minerals can be profitably extracted considering grade, market - value, and extraction cost. Mineral reserve is a part of ore that is economically and legally mineable. Gangue is the worthless rock or mineral matrix in which ore minerals are found. Placer deposit is a type of sedimentary deposit of valuable minerals formed by gravity separation from a source rock.

Answer:

A. Ore