The soothsayer advances the plot of the play in these lines by foreshadowing the dangers to come. Thus the correct answer is A.
A literary device known as foreshadowing allows a writer to give a small glimpse of what will happen later on in the narrative, to help the reader form expectations about the upcoming events.
"In Beware the Ides of March," Caesar is being warned by the soothsayer not to appear before the Senate on March 15 or he will undoubtedly pass away.
Therefore, option A where the Soothsayer plans the plot of the case by highlighting the warning for upcoming danger is the appropriate answer.
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