Option D. The carbon stored in plants reach the atmosphere through the process known as cellular respiration.
Explanation:
Every living organism gets the energy needed for it to survive through the process known as respiration. In the case of plants, cellular respiration takes place after the plant has created food through photosynthesis. The glucose made during photosynthesis breaks down in molecules and the cellular respiration begins, when that molecules start to be stored in the plant as energy. This stage is known as anaerobic respiration and does not need oxygen. After this stage, the plant starts to recognize the molecules of sugar and carbon dioxide starts to build up within the plant's organism, this is known as aerobic respiration and oxygen is needed. During cellular respiration plants take in glucose and oxygen and release carbon dioxide and water.
