Final answer:
Fatty acids are primarily found in the intestines of humans, specifically in the small intestine, where fats are broken down into fatty acids and glycerol. Amino acids, nucleic acids, and monosaccharides are also digestion products but are primarily found in different parts of the digestive system.
Step-by-step explanation:
The correct answer is C) Fatty acids.
Fatty acids are primarily found in the intestines of humans, specifically in the small intestine. During digestion, fats from the food we consume are broken down into fatty acids and glycerol in the small intestine. These breakdown products are then absorbed into the bloodstream through the walls of the small intestine.
While amino acids, nucleic acids, and monosaccharides are also digestion products, they are primarily found in different parts of the digestive system. Amino acids are the building blocks of proteins and are primarily digested in the stomach and small intestine. Nucleic acids are broken down into nucleotides and are primarily found in most of the foods we eat. Monosaccharides are simple sugars and are mainly digested and absorbed in the small intestine.