Which of the following is a product of digestion?

Amino acids are indeed a product of digestion, particularly in the context of the breakdown of proteins. When you consume protein-rich foods, enzymes in the digestive system, such as pepsin and trypsin, break down these proteins into smaller peptides and ultimately into individual amino acids. These amino acids are then absorbed into the bloodstream through the small intestine and can be utilized by the body for various functions, including building new proteins, serving as precursors for neurotransmitters, and contributing to other metabolic processes.

While vitamins are important for overall health and can be absorbed from digested food, they are not the direct products of digestion like amino acids. Blood cells are formed in the bone marrow and are not a direct result of digestion, and hormones are produced by endocrine glands and are also not derived from the digestive process itself. Thus, the correct identification of amino acids highlights the functional role they play as one of the fundamental products of protein digestion and importance in nutrition and metabolism.