In the scientific world, cold hard facts are often

it's c. (to reduce the greenhouse effect/carbon gasses)

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.

b) the inside picture would look at a very high temperature in a very low ph

i believe your answer would be c.. : )