Answer: C) Proteins
Explanation: Protein provides 4 calories for every 1 gram consumed as does carbohydrates, while fat provides 9 calories for every 1 gram consumed. The body can rapidly metabolize carbohydrates, making this macronutrient the favored energy source for your body. In contrast, the vital macronutrient protein breaks down your body's cells and rebuilds them.
To keep out dirt and other bad things
Answer:
c. made from natural fibers
