Question

Two unknown mineral samples, A and B, are rubbed against each other. Mineral A scratches mineral B. What can you infer about the minerals?
O Mineral A is harder than mineral B.
O Mineral B is harder than mineral A.
O Mineral A is more dense than mineral B
Mineral B is denser than mineral A.​

Answer 1

Answer:

Mineral A is harder than Mineral B

If Mineral A scratches mineral B, it is sharper and harder, because mineral A scratches Mineral B, not Mineral B scratching Mineral A.

The answer is the first option. Hope it helps!