Most proteins consumed in the diet:

A. are digested into amino acids and then enter into cellular respiration pathways to be reduced so that they provide energy to the organism.
B. are digested into nucleic acids and absorbed, and may be fed into cellular respiration pathways.
C. are absorbed and maintained as functional proteins if the body needs that particular protein.
D. are broken down into amino acids and absorbed, and may be re-polymerized into the proteins the body needs.