which property of a rock determines its color?\nits grain size\nits method of formation\nits mineral…

Answer:

C. its mineral composition

Brief Explanation:

The color of a rock is mainly determined by its mineral composition. Different minerals have characteristic colors, and the combination and proportion of minerals in a rock give it its overall color. Grain - size, formation method, and coarse - grain content do not directly determine color as significantly as mineral composition.