HOW do the first and final paragraphs of the article relate to each other?

A
Both provide information about Hitler's problematic rise to power in Germany.
B
Both describe historians' struggle to understand the fact of the Holocaust.
C
Both address effects of America's lack of action in the face of the Holocaust.
D
Both explain causes of German Jews' struggle to escape Europe.

Delegates: representatives who cast votes at a political party's national convention. binding: if a primary or caucus is “binding” that means the delegates won in that contest are legally bound to vote for a particular candidate at the parties national convention.a primary is a preliminary election used to determine a party's nominee for a specific office. the winner of the party's caucus, or primary, wins the party nomination for that state. then the delegates meet at their party's national party convention, which is a formal gathering of all party delegates from all states.