Breast milk has been known for making healthier babies. Nucleotides found in human breast milk has been shown to boost the immune system in infants.
I believe it is number 3.
Hope this helps!
<span>A hapten is one of Ruthie's symptoms that is an example of an innate defense mechanism. The hapten is a molecule which is small and it is not antigenic. The hapten also stimulates the process of production of antibodies in our own body.</span>
