How are conflict and plot related?

conflict is the only component of the plot structure.
conflict is the part of the plot structure in which everything is brought to a peaceful resolution.
conflict is the part of the plot structure in which the setting and characters are first introduced.
conflict occurs within the plot structure and involves a struggle between two characters, forces, or situations.

Geoffrey is writing a paper investigating friendly-fire incidents in recent us military actions. which paragraph topic would be relevant to his paper and would therefore merit inclusion in his final draft? a) a paragraph criticizing us military actions in the viet nam war b) a paragraph discussing how friendly-fire incidents are investigated c) a paragraph describing what basic boot camp is like for a new army enlistee eliminate d) a paragraph discussing how hard an extended military service can be on a family