Mars is dying, and the Martians want to live on Earth.
When the subject of a sentence comes before the verb, the sentence is in natural order.
When the verb or part of the verb comes before the subject, the sentence is in inverted order.
The verb is mixed so the subject comes before the verb.
I believe the answer is A. Natural
The first one
The others don’t make sense to be in the middle of the story.
Maybe by making a schedule