Question #6432899Single Choice
Biology
Question
A person who has recently recovered from a flu infection is now immune to the same strain of the flu virus. Which of the following best explains why they are immune?
Options
A
The person’s immune system produced antibodies and memory cells during the first infection.
B
The person’s immune system has a lower threshold for triggering inflammation.
C
The virus can no longer infect the person because the immune system has completely eliminated it.
D
The person’s skin and mucous membranes are now immune to the flu virus.
Answer & Analysis
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