During digestion, larger nutrients are broken into smaller units, including

a. amino acids, fatty acids, and glucose
b. glycerol, protein, and glucose
c. fatty acids, amino acids, and pepsin
d. amino acids, fiber, and glycerol
e. glucose, pepsin, and cholesterol

The correct answer is "amino acids, fatty acids, and glucose". In a simpler sense, carbohydrates are broken down into glucose (a monosaccharide) that can be absorbed in the intestines. Fats in the form of triglyceride is are broken down into fatty acids and monoglycerides (not glycerol). Proteins are broken down into amino acids. 

Pepsin is an enzyme that aids protein digestion. Fiber is mainly composed of cellulose or plant carbohydrates that the human body cannot break down as we lack the enzyme for it. Glycerol is not released from triglycerides from digestion but instead monoglycerides (only two fatty acids from triglycerides are released).

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