Answer:
c. Carbohydrates are stored as glycogen, which is a source of rapid glucose production during exercise.
Step-by-step explanation:
Athletes need to have some store of molecules that help them during competencies or long training to support the demand of energy that the exercise requires.
Carbohydrates are the bio molecules that are going to be stored as a glucose molecules together, giving as a result, glycogen.
In this way when a person need to obtain some energy, it can take little by little, some parts of this energy storage.
Hope this info is useful.