The size of the rock The weight of the rock The temperature where the rock was found The minerals the rock contains
I gave my students this multiple choice question: Beryl finds a rock and wants to know what kind it is. Which piece of information about the rock will best help her to identify it?

Only one answer is correct among these 4 choices:
- The size of the rock
- The weight of the rock
- The temperature where the rock was found
- The minerals the rock contains

Could you tell me which one is correct?

The minerals the rock contains