With increased exercise and less calorie intake, the human body
begins to convert stored fat into acetyl groups, which combine with
coenzyme A and enter the __________blank. This helps the body
generate ATP, weight is lost when

A. NADH transfers electrons to the electron transport chain.
B. ADP is converted into ATP during chemiosmosis.
C. carbon dioxide is exhaled.
D. oxygen combines with H+ to form water.