Which of the following sentences demonstrates proper pronoun-antecedent agreement?
A. if people want to travel to the moon, you must get a job at a space technology station.
B. if people want to travel to the moon, he must get a job at a space technology station.
C. if a person wants to travel to the moon, you must get a job at a space technology station.
D. if a person wants to travel to the moon, she must get a job at a space technology station.
The word "she" agrees with "a person," which is a singular antecedent.
Therefore, the Correct Answer is D.