Question

What is the one important thing protein does for the body? *
helps make bones strong
helps build muscles
keeps us from getting cold​

Answer 1

It helps in building up ur body...

therefore 2nd point will be the most appropriate..

Answer 2

→ Helps in building muscles.

Protein is the building block of your muscles. Therefore, eating adequate amounts of protein helps you maintain your muscle mass and promotes muscle growth when you do strength training.

Hope this is helpful✌