Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.
The correct answer that would complete the given statement above would be the third option. The option that is not correct is photosynthesize. Not all cells do photosynthesis. All living organisms consist of cells, but the only cells that are capable of photosynthesis are those that are found in plants. Cells in animals are not capable of photosynthesizing.
