When making calculations, you should rely on the precision of your measured data. true false

True 

Im happy i could help you today 

have a great rest of ur week :)

Most likely a is the answer - because  you generate   38 atp's but also consume an atp.   each atp gives approx. less than 4 kcal so probably a is the closest answer.

They can measure  the amount of energy gained or lost