Answer:
The correct grade which I think as the teacher is option A
The reason why one case of influenza does not confer lifelong immunity is that the virus tends to mutate overtime which makes it unrecognizable to the immune system.
<h3>Why is it difficult to get immunity to influenza?</h3>
Influenza is caused by a virus which tends to mutate overtime in order to stay ahead of medical technology.
As a result, this mutation makes the original virus unrecognizable to the immune system which would then be unable to fight it.
Find out more on natural immunity at brainly.com/question/21480961
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Answer:
Model
Explanation:
In the given scenario of the question ,
Jonah acts as a model for young Matthew ,
A model can be a person whose success , example , behaviors and activities are influenced by other people , is referred to as a model .
The eating habits of Jonah where very impressive , and hence , Matthew tries to copy it by tasting pasta dish , showcasing , that Matthew is considering Jonah to his model.
