Answer:
b) uterus.................
Maybe you should tell him to go to a doctor or tell him to see a Psychiatrist.
<span>Edward Jenner discovered a vaccination against [smallpox] by infecting a boy with [cowpox]. He noticed that milkmaids who got cowpox never got smallpox and developed his theory from there. He is the father of the study of immunity and immunisation.</span>
