ANSWER
Carbohydrate
option A
EXPLANATION;
Monosaccharides are simple molecules of carbohydrate that cannot be broken into their carbohydrates.
Disaccharides are carbohydrate made of two monosaccharides and with the loss of one molecule of water dehydration.
Hence, monosaccharides and disaccharides are both carbohydrate molecules.
Therefore, the correct answer is carbohydrate