Directions: This question presents a sentence, all or part of which is underlined. Beneath the sentence you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.

In oceanography, there must be a balance between explaining the value and workings of marine organisms, revealing the secrets of ocean currents and geophysical fluid dynamics, and to promote respect for the marine world.

between explaining the value and workings of marine organisms, revealing the secrets of ocean currents and geophysical fluid dynamics, and to promote

among explaining the value and workings of marine organisms, revealing the secrets of ocean currents and geophysical fluid dynamics, and promoting

between explaining the value and workings of marine organisms, revealing the secrets of ocean currents and geophysical fluid dynamics, and promoting

among explaining the value and workings of marine organisms, the revelation of the secrets of ocean currents and geophysical fluid dynamics, and to promote

between explaining marine organisms' value and working, in revealing the secrets of ocean currents and geophysical fluid dynamics, and in promoting