Leukopenia is a condition characterized by a decrease in white blood cells. what effect does leukopenia have on the body's ability to fight infection?
a) leukopenia increases the body's ability to fight infection.
b) leukopenia decreases the body's ability to fight infection.
c) leukopenia has no effect on the body's ability to fight infection.
d) leukopenia increases the body's ability to fight infection at certain times and decreases it at other times.

B) Leukopenia decreases the body's ability to fight infection.  

The condition Leukopenia results due to decrease in the count of the white blood cells. It results typically due to the decrease in the number of neutrophil. White blood cells are important for maintaining the immunity within a human body. These cells protect the body against the foreign invaders like bacteria, viruses hence, prevents infection. As, the number of white blood cells decreases the body's ability to provide protection against foreign invaders decreases and hence, infection occurs.

Therefore, B) Leukopenia decreases the body's ability to fight infection is correct.

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