Each new step in science (blank) twenty seemingly (blank) facts as merely the various manifestations of a single principle.

1-unifies...harmonious
2-reconciles...discordant
3-integrates...identical
4-undermines...erroneous
5-illuminates...consistent

Each new step in science reconciles twenty seemingly discordant facts as merely the various  manifestations of a single principle.

Explanation:

Even though the only context we have is the sentence itself, we can safely choose number 2. This type of sentence is used when we wish to present contrasting ideas. There would be no reason, for example, for science to unify what is already harmonious, or to undermine what is already erroneous. Those ideas are redundant. It makes much more sense to say that science reconciles facts that are seemingly discordant. That is the wonder in science: to see different things as the manifestations of a single principle, which could seem, if science did not exist, impossible.

the autor of the text is bringing the point that one achievment of the president john f. kennedy was a success and this caused the next president to use a similar idea. the purposefor the use of the quotation in the text is to support the idea that peace corps was a result of the president's call. in this case, the quotation is presented as part of the writing and does not stand on its own.

answer a.

the writer needs to avoid using abbreviations and check spelling before sharing.