Show the energy conversion for a plant reviving sunlight

Radiant energy, into forms useful to humans. The photovoltaic array absorbs solar energy and stores it as chemical potential energy in batteries. The leaves of the tomato plant absorb solar energy that is (mainly) stored as chemical potential energy in compounds called carbohydrates.

Plants also convert sunlight into other forms of energy. In this case, plants convert light energy (1) into chemical energy, (in molecular bonds), through a process known as photosynthesis. Most of this energy is stored in compounds called carbohydrates. The plants convert a tiny amount of the light they receive into food energy.

the answer is 0.42 is that is an option. this question provides no info