Answer:
I think that the answer may be c
1. The purpose of this text is to inform us about the layers of the Earth and what they are composed of.
2. The mantle is a soft layer of molten rock called magma. In the upper parts, the rock is more rigid.
3. No. This statement is not true because the Earth is also made up of elements such as iron and nickel. The crust also contains life forms and water along with rocks.
ANSWER: the map can be a primary or secondary source. If a map was produced as immediate evidence of an area, then it is a primary source. If the map is just a symbolic depiction of a space then it is a secondary source.
