Final answer:
Photosynthesis uses sunlight, water, and carbon dioxide to produce glucose and oxygen, with glucose being the primary product.
Step-by-step explanation:
Photosynthesis uses sunlight, water, and carbon dioxide to make glucose and oxygen. The glucose is a sugar molecule that serves as a form of energy storage for plants, while oxygen is released as a byproduct of this process. Therefore, the correct answer to the question is A) Glucose. Although oxygen is also produced during photosynthesis, it is not considered the main product since it is primarily an output or waste product released into the atmosphere.