D.They covert carbon dioxide, water, and sunlight into carbohydrates.
Explanation;
-Autotrophs are organisms that have the ability of making their own food. Photoautotrophs make their own food using the process of photosynthesis. They use energy from sunlight, water and carbon dioxide to make organic materials such as simple sugars, that can be used in cellular functions such as respiration.
-Most plants are autotrophs, but all autotrophs plants are not photoautotrophs.