In "mother to son," how does langston hughes use the image of a person climbing a broken staircase? a. as an allusion to a famous fairy tale about a princess who must escape hardship by climbing steps b. as the resolution to the conflict faced by the speaker, whose life has been difficult c. as a metaphor for the poem's main idea that a person should keep trying in difficult circumstances d. as a simile that compares the relationship the speaker has with her son to the staircase