Which of the following is used by green plants for the manufacture of food?

Explanation

The correct answer is Option: All of these. Photosynthesis in green plants requires carbon dioxide, water, and sunlight. Carbon dioxide is taken from the air, water is absorbed through the roots, and sunlight provides the energy needed for the process. Together, these components allow plants to produce glucose, a form of food, and oxygen as a byproduct. Options A, B, and C individually represent essential components, but none alone can complete the process of photosynthesis.