Question

read the source of the allusion.
in 49 bce, julius caesar defied roman laws and led his forces across the rubicon river into italy. legend has it that caesar hesitated before making this move because he knew the consequences that would likely result. this decision started a three - year civil war, which ultimately resulted in caesars being declared ruler of the roman empire.
what is the meaning of the allusion in the sentence below?
as he cast his vote, johnny felt as if he were crossing the rubicon.
making a choice that cant be undone
doing something hypocritical
taking the easy way out

Explanation:

The source text tells that Julius Caesar's crossing the Rubicon was a decisive and irreversible action that led to significant consequences. In the sentence, Johnny's feeling of "crossing the Rubicon" when casting his vote implies a similar sense of making a choice with far - reaching and unchangeable results.

Answer:

making a choice that can't be undone