International means it's involved with more than one nation, so it can't be A or B.
In order to produce an effective immune response within the body, the person must be injected with a dosage of a virus or bacteria, and for it to be allowed to grow in the person, which replicates just enough to stimulate a response from the immune system.
Answer:B
Explanation:
If lizards with long legs can run faster to escape the new predator than lizards with short legs can, then the long-legged lizards are more likely to survive and reproduce. The short-legged lizards are more likely to be caught by the predator, so they are less likely to survive and reproduce. Because of this, the majority of the lizards' offspring have long legs.
Others pinpoint 1637 as the true origin of Thanksgiving, owing to the fact Massachusetts colony governor John Winthrop declared a day of thanks-giving to celebrate colonial soldiers who had just slaughtered 700 Pequot men, women, and children in what is now Mystic, Connecticut.