Answer:
C. light energy
Explanation:
In all these plants the energy is converted from the photosynthesis process. As per this photosynthesis phenomenon plants get energy by the light received from the sun.
This will help to make the plants to grow and make fruits in the plant.
in this word photosynthesis we can see it is combination of photo + synthesis
which clearly means that this energy synthesis is with the help of photons received from the sun.
These photons are light photons
So here correct answer will be
C. light energy