Answer:

Explanation:
Remember, photosynthesis is a process certain organisms, like plants and algae, undergo to make glucose. The photosynthesis formula is:
6H₂O + 6CO₂ + energy ⇒ C₆H₁₂O₆ + 6O₂
Water, carbon dioxide, and light energy from the sun become glucose/sugar and oxygen.
The plant uses the carbon dioxide in the process, so that gas moves in. Oxygen isn't used by the organism and is considered a waste product. That gas moves out.
Therefore, the best answer is D. carbon dioxide moves in and oxygen moves out