What is the primary function of the carbon cycle?

recycling the supply of carbon on earth
creating macromolecules
recycling the supply of water on earth
creating fossil fuels

The answer is Recycling the supply of carbon on earth.

Explanation:

The carbon cycle is extraordinarily important for the development of life. It is important to consider that living things are composed of a large extent of carbon and that they feed on it in various ways.

The carbon cycle begins in plants and some bacteria capable of performing photosynthesis, taking the CO2 to use it as their food, these plants and bacteria then serve as food for other animals, which when they die, go through a process of decomposition by fungi and bacteria, which cause the carbon left in the corpses to return to the earth.  Where the process starts again.

In this way it is clear that the carbon cycle is a fundamental process for life, for the maintenance of it in all its complexity, since in each phase of this it is observed how each living being takes advantage of this cycle and gives step to its continuity.

the pic attached shows the stages of mitosis. hope it !

a and c are the answeres