The rock bodies have sufficient pore spaces in which they contained oil and natural gas.
Answer: Option A
Explanation:
The oils and natural gases are usually found underground in many bodies of rock around the world. They are stored in reservoirs in the underneath of water bodies in rocks. The reservoirs are nothing but group of rocks made up of sedimentary rocks which are porous and permeable in nature.
So, the oils and natural gas will be stored in the pores of these rocks as layers. They will be stored based on their density like petroleum having the highest density will be present in the innermost layer of the pores of the rock followed by other kind of oils and the pores are sealed by natural gases due to their low density.