Hi! The answer would be, "It is written in first person because it is told through the speaker's voice, but the speaker tells what the traveler and Ozymandias say." I know this because I just took the test and got this question right. :D
The answer is A. Because all the remaining answers are good examples of how people could generally cut back on their use of oil. And if your family moves father away from where you work, you will need to travel longer distances, and thus use more oil, which is opposite of what you are trying to do.
I agree with the person who answered this