Minerals are made of rocks. Crystals are made of rocks. Rocks are made of one or more minerals. Magma is made of solid rock.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which statement is true about rocks?
Possibilities:
- Minerals are made of rocks.
- Crystals are made of rocks.
- Rocks are made of one or more minerals.
- Magma is made of solid rock.

Rocks are made of one or more minerals.