The best piece of evidence to support the claim that ATP provides the energy for various cellular activities and that this happens because of cellular respiration is:
During cellular respiration, glucose is broken down and the energy released is used to form ATP.
This statement directly links cellular respiration to the production of ATP and emphasizes that the energy released during the breakdown of glucose is what allows ATP to be formed, thus highlighting the essential role of cellular respiration in ATP production and energy provision for cellular activities.