Final answer:
Arginine, a nonessential amino acid, may be particularly useful in post-burn therapy for its role in tissue repair and immune function. Unlike leucine, which is essential, arginine can be synthesized by the human body but may be needed in greater quantities during recovery from burns.
Step-by-step explanation:
Among the nonessential amino acids useful in post-burn therapy, arginine is of particular interest due to its role in tissue repair and immune function. Although arginine can be synthesized by the human body, supplementation may be beneficial in certain cases such as burn therapy, where the demand for this amino acid may exceed the body's capacity to produce it. Other amino acids like asparagine, proline, and leucine, while important, do not hold the same significance in post-burn therapy as arginine does, with leucine actually being an essential amino acid and therefore not classified under nonessential amino acids.