Answer:
his participation in the event was required, compulsory, essential, mandatory
The correct answer can be C in my opinion....
The best answer for this question would be:
the concerns of Calphurnia.
Calphurnia is a character that somehwhat predicts what will
happen to Caesar, it is revealed in her dream that “people were bathing in
Caesar’s blood.” This greatly concerned her which she adviced Caesar not to
leave home for the night.
I believe subtext would be the best option, simply becasue the plot is more of the main idea and what is going to happen where the subtext is kind of what the author wants you to get out of it.