Answer:
Environment and the air
Explanation:
As we know that plants make their food through the process of photosynthesis in which they utilize light energy from the sun, CO2 and water from the air to make food in the form of sugar molecules.
Sunlight and chlorophyll
carbon dioxide + water —---------> glucose + oxygen + water.
Since CO2, H2O and sunlight come from Environment and the air therefore its appropriate answer.
Hope it helps!