I believe that the line from the text that shows men looked forward to their walks has something to do with the answer below and among the four choices listed above the answer below is the correct one and it is:
a. "Chief Jewel"
The correct answer is A. they do not wish the soldiers to hear their discourse.
They are planning to kill Caesar, because they no longer think he is fit to rule the country. Thus, they move to a more secluded place to go over their plan, and they need to be alone so that the guards don't hear them and try to thwart their plan.
In the sentence provided, "Racers, start your engines" the word <em>Racers</em> represents a noun of direct address.
These nouns of direct address are defined as words that name a person, places, things or ideas. In the particular case of the sentence provided this name (Racers) reffers to the persons who are taking part in the career.
