Fiona wrote out the description of each step for her multiplication of the binomial and traditional (2x-3)(5x²-2x+7). In which step did Fiona make an error?

Which pair of uses of figurative language from “the caged bird” support the extended metaphor of freedom versus oppression? back of the wind; floats downstream his wings are clipped; his feet are tied the caged bird sings; the free bird thinks dawn bright lawn; grave of dreams