The correct answer is;
A. sedimentary
Mountains formed by two colliding continents often contain marine SEDIMENTARY rock.
Explanation:
This suggests that if they strike, regularly mounts come from out of the sea and actuate vertically up. This indicates that sedimentary marine rocks ultimately become non-marine rocks because they're not in the sea anymore so they can be located on before-mentioned mountains.
Mountains formed by two colliding continents often contain marine SEDIMENTARY rock.
