Answer:
Sugar plus oxygen reacts together into carbon dioxide, water, and energy.
Step-by-step explanation:
What the RxN tells me is that we take in sugar as well as oxygen, combine them together and react, and in turn produce carbon dioxide, water, and energy.
This makes sense, because we eat food and breathe in oxygen, so those are our reactants. When we exhale, we breathe out carbon dioxide and we go use the restroom to get rid of excess H₂O. The energy produced is used for our bodily movements.