It has a nice surface. It has an interesting shape. It is made of several layers. It feels warm when touched.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A student observes different characteristics of a rock. Which observation best describes a fact about the rock?
Possibilities:
- It has a nice surface.
- It has an interesting shape.
- It is made of several layers.
- It feels warm when touched.

It is made of several layers.