Out of the choices given, the figurative language that helps support the extended metaphor of freedom versus oppression is "The caged bird sings; the free bird thinks."
C. Autumn is your answer...hope this helped
Mother and her Children .
If I had to guess I would say that the doves represent peace or freedom (Most likely peace) and because the papers are compared to doves maybe they have something to do with freedom or peace. Let me know if this helps or if you need more.