Final answer:
The quote "...I do fear the people choose Caesar for their King," is spoken by Cassius in Shakespeare's play Julius Caesar, reflecting the historical fears of Caesar's rise to power.
Step-by-step explanation:
The quote "...I do fear the people choose Caesar for their King," is attributed to the character Cassius in William Shakespeare's play Julius Caesar. This line expresses Cassius's concern over the possibility of Julius Caesar gaining too much power and potentially being appointed as a king by the people of Rome, which would threaten the republic's democracy. In historical context, Caesar's consolidating of power alarmed many in the Roman Senate, leading to a conspiracy that ultimately culminated in his assassination by Brutus, Cassius, and other senators.