Final answer:
ATP is not suitable for long-term energy storage due to it being an unstable molecule. For long-term energy storage, the body relies on other molecules like glycogen and glucose to produce ATP through cellular respiration. The correct correct is (A).
Step-by-step explanation:
Elizabeth's thinking is incorrect because ATP is an unstable molecule and not suitable for long-term energy storage. ATP is actually used for short-term energy needs in the body. It is
better suited for immediate energy requirements, such as muscle contractions during exercise. For long-term energy storage, the body relies on other molecules like glycogen, which can be broken down into glucose and then used to produce ATP through cellular respiration.