microscope and balance beaker and graduated cylinder graduated cylinder and balance microscope and graduated cylinder
I gave my students this multiple choice question: A class is studying the density of rock samples. What scientific equipment do they need to determine the density of the rock samples?

Only one answer is correct among these 4 choices:
- microscope and balance
- beaker and graduated cylinder
- graduated cylinder and balance
- microscope and graduated cylinder

Could you tell me which one is correct?

graduated cylinder and balance