Select the most appropriate option to fill in blank number 4.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. planet.
- The sentence is discussing the idea that there are no "little green men" on a certain celestial body, specifically the one nearest to Earth.
- The appropriate choice to fill in the blank is the word "planet."
- This choice maintains the logical context of the sentence, as it refers to a celestial object that is a member of our solar system and is distinct from other options like "space," "system," and "galaxy."
Thus, the completed sentence would be:
Today, however, we know that there aren’t any “little green men” on the planet nearest Earth.