Answer:
Option D, Starch
Step-by-step explanation:
Starch is a polysaccharide which is used to store extra glucose in plants. Plant produces glucose (sugar) during the process of photosynthesis in the presence of sunlight. Plant then uses this sugar to produce energy in the form of energy molecules ATP. Extra sugar which is stored in starch is used by plants whenever they need energy. A small amount of glucose is taken from starch to fulfill the energy requirement of plant.
Hence, option D is correct