What best explain the purpose of the rhetorical device used in the following sentences

How does kennedy describe the children who might benefit from medical space technology

Which character threatens several times to kill solomon northup in twelve years a slave? clemens ray burch john williams robert

How does langston hughes use the denotative meaning of the word uniform ironically in his poem "will v-day be me day too"? a. to show that african americans faced segregation even while fighting for their country alongside americans of other races b. to show that african americans enlisted in the war hoping to gain acceptance and equality in their country c. to show that by donning the u. s. army uniform, the people of america stood united, irrespective of their race d. to show that african americans who were part of the armed forces were treated with dignity