Answer:
A. Light energy, above the arrow.
Explanation:
Photosynthesis is a process in which chemical energy is produced by the conversion of solar energy. In this process, carbondioxode enters through small opening called stomata and water is absorbed by the plant from the soil. These two raw materials combine in the presence of sunlight produces sugar in the form of glucose and oxygen. Glucose is stored in plants part and oxygen is emitted in the atmosphere.