Question

I feel like their is a simple answer to this but

Answer 1

The answer to your question on which are the most common minerals that can be located in Earth's crust would be B - Feldspar and quartz

In fact, the reason why this is the correct answer is because if you were to dig into the Earth's crust - these two metals are what you would most likely found in a lot of cases.

Answer 2

The answer to your question would be:   B.      Feldspar and quartz