Read this excerpt from "nixon resigns" by carroll kilpatrick:
largely because of his breakthroughs in negotiations with china and the soviet union, and partly because of divisions in the democratic party, mr. nixon won a mammoth election victory in 1972, only to be brought down by scandals that grew out of an excessive zeal to make certain he would win re-election.

how do the details of this excerpt best develop the central idea that nixon's resignation is tied to the watergate scandal?

a) they illustrate nixon's negotiation skills were overseas but not within his own government.

b)they indicate that nixon was overly focused on winning a second term and willing to do anything to secure victory.

c) they show that even with the democrats' lack of unity, the republicans still focused on ensuring their candidate's electoral triumph.

d)the provide insight into ways peace negotiations could not overshadow nixon's eagerness to defeat his political opponents.