The hardest mineral is _____ with a hardness of _____.
A. quartz; 1
B. quartz; 10
C. diamond; 1
D. diamond; 10

Respuesta :

The hardest mineral is a diamond with a hardness of 10.

Hope this helps!
The answer you're looking for would be "D: Diamond; 10". Diamond is known to be the hardest mineral out there. Plus, the scale is marked from 1-10, 1 as the softest, and 10 as the highest.