According to the given text, the appearance of Caesar's ghost affect Brutus because He is terrified by the ghost and does not acknowledge it.
The happening of Caesar's ghost to Brutus on the battleground of honor displays that Antony's vaticination of Caesar's character's strength, as well as the death and “destruction” that will befall Rome, had come true.
According to the supplied text, Brutus is affected by the sight of Caesar's ghost because he is scared of it and refuses to acknowledge it.
Therefore, option A is correct.
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