After digestion protein is converted into

Explanation

During digestion, proteins are broken down into their smallest building blocks called amino acids. These tiny units can be absorbed by the small intestine into the bloodstream.

Your body uses amino acids to build new proteins for muscles, skin, and organs. They are like small bricks that can be rearranged to make different structures.

Proteins always break down into amino acids during digestion. Acids mentioned in other options come from different food sources, not protein digestion.