Question

which is the best way to complete the text? sir william herschel discovered ______ was also the first astronomer to accurately describe the spiral structure of the milky way galaxy. uranus, and, he uranus, and he uranus, in addition, he

Explanation:

The most grammatically - correct and natural - sounding option is "Uranus, and he". The first option has an unnecessary comma after "and", and the third option "in addition" makes the sentence a bit wordy and less smooth. "Uranus, and he" connects the two facts about Sir William Herschel in a straightforward and correct way.

Answer:

Uranus, and he