Answer:
Proteins and carbohidrates are the two biomolecules that the supplement must have to provide the benefits it offer.
Step-by-step explanation:
First of all, to understand this we need to analyze the question. It says that the supplements claim to build lean muscle and strengthen tendons and ligaments. All of these body parts use energy to work and the energy fuel these body parts use is muscle store. Muscle store produces cortisol to create that energy and insulin is the hormone that helps to reduce the impact of cortisol. But to be effective insulin requires carbohydrate intake and carbohydrates alone won't help you recover the muscle loss and energy. So, that's why you have to mix them so they work out can be performed and the growth allowed.