Answer:
ADP.
Explanation:
During exercise, the source of energy for the body is adenosine triphosphate (ATP) molecules. ATP molecules provide energy by hydrolysis, which is used for the contractions of participating muscles and thus, help in movement.
ATP hydrolysis involves breakdown of ATP molecules into adenosine diphosphate (ADP) and inorganic phosphate molecules, with release of a high amount of energy. Thus, 'during the exercise, the body will have more ADPs than ATPs as ATPs would actively participate in chemical breakdown into ADP to release energy.'
