A woman decides to start on a new exercise program. She runs for 20 minutes every day for a month, and she ke

A woman decides to start on a new exercise program. She runs for 20 minutes every day for a month, and she keeps her diet the same. At the end of the month, she gets on the scale and see that she lost 2 pounds. The mass that she lost _______________.
a. was expelled in feces.
b. was exhaled as carbon dioxide.
c. was lost as heat.
d.was expelled in urine and sweat.

C. Was lost as heat
If someone exercises, but doesn't change their diet, they lose water through sweat, but the energy from the fat lost cannot be lost, it can only be transferred to another type of energy: heat, which is then released in the air.

B. CO2

A