C. Both investigations have benefits and limitations and should be examined together to get the most reliable result
When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP). ... Likewise, energy is also released when a phosphate is removed from ADP to form adenosine monophosphate (AMP).
It's an sight observation you're using your eyes to see it it's one of your 5th sences