location and mass of the sample shape and texture of the sample hardness and streak of the sample color and size of the sample
I gave my students this multiple choice question: Which information would probably be most helpful to someone trying to identify a mineral sample?

Only one answer is correct among these 4 choices:
- location and mass of the sample
- shape and texture of the sample
- hardness and streak of the sample
- color and size of the sample

Could you tell me which one is correct?

hardness and streak of the sample