How does the carbon stored in the bodies of living organisms move into rocks?

Question

Carbon dioxide dissolves in ocean water and is slowly absorbed by rocks in the ocean.
Living organisms decay, releasing carbon into the soil, and soil is compacted into rocks.
Carbon dioxide released through respiration dissolves in certain rocks, like limestone.
Living organisms decay and become fossil fuels, which eventually become rocks.

Answer 1

The correct explanation for how carbon stored in the bodies of living organisms moves into rocks is:

Living organisms decay and become fossil fuels, which eventually become rocks.

When organisms die, their remains can be buried and undergo chemical processes over millions of years, transforming them into fossil fuels like coal, oil, and natural gas. These fossil fuels, when subjected to geological processes, can also be incorporated into sedimentary rocks. Other pathways, such as the formation of carbonate minerals from organisms that have calcium carbonate structures (like shells), also contribute to the carbon cycle, but the specific process mentioned refers to the decay of organic matter leading to fossil fuels.