2. A. Protein helps a child's body build cells, break down food into en
infection, and carry oxygen.
B. Protein help a child's boay build cells, break down food into energy, fig
infection, and carry oxygen.
C. Proteins helps a child's body build cells. break down food into energy.
infection, and cany oxygen.
D. Proteins helping a child's body build cells, break down food into energ
infection, and carry oxygen.​