where the rocks were found. how the rocks were formed. the composition of the rocks. the color and shape of the rocks.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Rocks found on Earth are classified as sedimentary, metamorphic, or igneous based on
Possibilities:
- where the rocks were found.
- how the rocks were formed.
- the composition of the rocks.
- the color and shape of the rocks.

how the rocks were formed.