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.
I'd go with B (Both are speaking articulately) Because Articulately means its easy to understand. Speaking in a loud voice and at the same time very high pitch, its kinda hard to understand the person when he/she is speaking.
