Question

What causes the different colors of layers in a sedimentary rock? A. the cooling process of the magma B. the weather in the area C. different minerals and sediments in the rock​

Answer 1

Different colors of sedimentary rock are determined by the environment where they are located. For example, red rocks form where oxygen is present. Darker sediments form when the environment is oxygen poor.

So, basically, the weather and surroundings of the rock, so B.