Solution:
The right answer is Carbohydrate
It is compound, including sugars, starches, and dietary fibers, that usual have the general chemical formula (CH2O)n, (where n represents the number of CH20 units in the molecule.) they are a major source of energy for body functions
Plants is the major food sources for carbohydrates
The simple complex main carbohydrate is monosaccharides and disaccharides;
