The correct answer is D

Although, ATP (Adenosine Triphosphate) is not directly involved in the transmission of nerve impulses. Nerve impulses are transmitted through electrical and chemical signals, such as action potentials and neurotransmitters. However, producing water during aerobic respiration isn't the primary role of ATP; rather, ATP is the energy currency of the cell, while water is a byproduct of the electron transport chain, a key step in aerobic respiration.