Answer:
i think the answer is D. hope i helped
Explanation:
An innovative way was an improvised vaccination.
This consisted of smearing open cuts of healthy people with substances taken from wounds of sick people (for example sick from smallpox) in the hope that they will undergo a mild version of the disease and when the disease catches them, not die.
The risk was that they could get seriously ill, but the advantage was that on average, they had better survival chances than without this "vaccine"
Where are the answer choices?
The answer would logically be A.
An oil spill covering an entire ocean has nothing to do with politics.
Nor does C.
B doesn't really contribute much to the question at hand. Sure, he's a politician, but who cares about the large glasses or big ears?
Asia. It has the two most populated countries in it.