The autotrophic mode of nutrition requires

The correct option is D

All of the above

The correct option is D:

Explanation of the correct option:

1. The mode of nutrition in which an organism prepares its own food by using simple inorganic substances is called an autotrophic mode of nutrition.
2. The simple substances required for autotrophy include water, sunlight and minerals, and pigments like chlorophyll.
3. Autotrophs convert CO₂ into organic substance glucose to meet their energy needs.
4. Water act as a solvent for the transport of the material and also helps in CO₂ fixation.

Final answer: The autotrophic mode of nutrition requires chlorophyll, sunlight, CO_2, and water.