Answer :
The critical way in which the protagonist is dynamic in "there's a man in the habit of hitting me on the head with an umbrella" is: "he is able to fight back against the force opposing him" (Option A).
Who is a protagonist?
In every fictional story, there is always a lead character who is the primary focus of the story. This character is the protagonist.
Hence, it is correct to state that the critical way in which the protagonist is dynamic in "there's a man in the habit of hitting me on the head with an umbrella" is: "he is able to fight back against the force opposing him"
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