cooled magma from a volcano eroded sediment from a riverbed weathered rock from a canyon saturated soil from a floodplain
I gave my students this multiple choice question: Which of these describes a location where minerals are most likely to form?

Only one answer is correct among these 4 choices:
- cooled magma from a volcano
- eroded sediment from a riverbed
- weathered rock from a canyon
- saturated soil from a floodplain

Could you tell me which one is correct?

cooled magma from a volcano