I believe B would be the answer, as the subject closest to the verb (rolls) corresponds to the verb (when there is an "or" or "nor" in a sentence, the verb should correspond to the subject closest to it). For A, "adding machine" should correspond to "make," but it doesn't. For C, the subject is plural (team members and the coach), but the verb is singular; the case is the same for D.
Answer:
A. It helps the reader understand the implication of events better than the narrator could.
Explanation:
By definition, dramatic irony is the phenomenon of the reader knowing more about the reality of the matter than the characters themselves.
This literary technique in especially useful in works with unreliable narrators because it gives the reader the opportunity to know and understand the plot of the story independently of the narrator's words. In other words, the reader does not need to rely on the characters to understand the events of the work, thus being able to detect unreliability, where present.
“Because I got you to look after me, and you got me to look after you, and that’s why”