human
Question: There are several different types of rock. Each type of rock is formed under different conditions. How are sedimentary rocks, such as shale and sandstone, formed?

Choices:
A) Particles are heated by the Sun.
B) Particles are melted together by magma.
C) Particles are compressed into layers.
D) Particles are changed into liquids.
gpt
The correct answer is 2: Particles are compressed into layers..