Correct Option: BExplanation:Amylase is the enzyme that catalyses the hydrolysis of starch into simple sugars. So if salivary amylase is lacking in saliva, the breakdown of starch is affected. Other phenomena such as protein breakdown to amino acids by protease enzyme and fat breakdown by bile in the small intestine. Whereas vitamins are absorbed by the small intestine.Hence, if salivary amylase is lacking in the saliva, then in the mouth starch will not break down in sugar.