What is the author purpose in writing the poem caged bird. how do you know?

Angelou uses the metaphor of a bird struggling to escape its cage, described in Paul Laurence Dunbar's poem, as a prominent symbol throughout her series of autobiographies. Like elements within a prison narrative, the caged bird represents Angelou's confinement resulting from racism and oppression.

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.

i have no idea buudy for the points tho