Answer:
A.
first line of defense
Explanation:
The first line of defense acts to prevent external substances from entering the body hence sneezing out the pollen acts to expel the pollen from entering his windpipe thus is the first line of defense.
Tampons give toxic shock syndrome. So I'm guessing the period talk
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Correct spelling
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Shock is also called hypoperfusion. It is the process in which the bodies tissues fail to become oxygenated by the blood usually due to a variety of things. So taking the into account D is your answer.
