The correct answer is C. Leaves are the primary site of photosynthesis in plants, and they are adapted to maximize the amount of carbon dioxide that gets to their cells. A large surface area allows leaves to expose more cells to the air, which helps to increase the amount of carbon dioxide that can be absorbed. A thin cuticle also helps to increase the amount of carbon dioxide that can be absorbed by the leaves. The cuticle is a thin layer of wax that covers the surface of the leaves and helps to protect them from damage. A thin cuticle allows more carbon dioxide to pass through it and reach the cells of the leaves.
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