Question

To qualify as a mineral, a substance must:

A. have a chemical composition that varies with temperature.
B. exist as a liquid.
C. be organic.
D. occur naturally.

Answer 1

I believe it is d

For a substance to be a mineral, it must be a naturally occurring, inorganic, crystalline solid that has a characteristic chemical composition and crystal structure.

Answer 2

Step-by-step explanation:

The one characteristic that is true of those given is D. It occurs naturally.