Answer:
Lenina has never seen an old person because she is used to her society where no one ages past thirty.
This is in third person PoV (likely omniscient to be precise). This is known because the readers know almost every thought and emotion of each character.
Examples of this are provided throughout. Just find quotes about the character's thoughts/feelings. :)
The main purpose of the following....
the only answer that would make sense is TO DIRECT the other choices don't make sense. because it;s telling the reader how to put the swing set together that's the same thing as directing them.
hope this helps and hope i'm right:)
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