The answer to the problem- C- Microscope
The metaphor in this statement is "the great millstone" it kind of qualification word it express how big the time was.
But in reality, millstone doesn't even have a relationship with the time.
So "the great millstone" is a metaphor.
Answer:
the sentence needs a punctuation mark
Explanation:
The sentence is made up of two clauses "Appearing almost like an alien planet," and "Edgar could see a huge grid of wind turbine in uniform rows and columns that stretched across the desert and the horizon." The second portion needs a period (or full stop). A period signifies where a sentence ends. Without a period, readers will be confused as they do not know where the sentence ends.