The answer is c. Starch.
During
photosynthesis in the leaves of the plants, carbon dioxide and water are converted into glucose and oxygen
using the energy of sunlight. The excess of glucose synthesized in
photosynthesis is converted and stored as a starch which is than transported into storage organs where it will serve as a long-term energy storage.
Fat is used for long-term energy storage in animals, while ATP and ADP are short-term energy storage.
