Dead organisms when get compressed and stuck together inside soil for long time, gives rise to organic sedimentary rocks.
Option D
Explanation:
Organic sedimentary rocks are the types of sedimentary rocks generally formed in swamps or water logged areas over years where remains of living organisms like leaf or dead bodies of animals get petrified and stored under the soil for considerable amount of time and due to carbon deposition, it forms rocks. Most classical example of this type of sedimentary rocks is coal.
When a dead organism gets stuck and dies, firstly the body gets petrified. Then the minerals from surrounding soil and from the body itself gets to deposit in that place and slowly with time, it forms the rock.
