Final answer:
The correct answer is carbon dioxide. During photosynthesis, plants use carbon dioxide, water, and sunlight to produce glucose and oxygen.
Step-by-step explanation:
The correct answer is d) carbon dioxide. Carbon dioxide is not a product of photosynthesis. During photosynthesis, plants use carbon dioxide, water, and sunlight to produce glucose (a sugar) and oxygen. The process of photosynthesis occurs in the chloroplasts of plant cells, specifically in the chlorophyll-containing organelles called thylakoids. Chlorophyll absorbs sunlight to power the photosynthesis reaction. So, the correct answer is option d) carbon dioxide.