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Select the correct answer.
Larry is taking a walk in the park. The pollen in the air makes him sneeze constantly. What line of defense is his immune system exhibiting?
A.
first line of defense
B.
second line of defense
C.
third line of defense
D.
fourth line of defense

Answer :

Milliecartier

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.

Answer:

a

Explanation:

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