a. Oral Sex - this still causes transfer of sexual fluids which can spread HIV. Technically if sexual fluids come in contact with toilet seats or clothing (underwear, etc), than HIV can be spread through those. But the chances of contracting HIV must be slim for those options since the fluids need to find a cut or an open blood vessel to enter.
C. Paraphrase does not contain a direct quotation but still gives the general gist of the quote.
A reference to Walt Whitman's "I Hear America Singing" => "I, Too". Langston Hughes' poem adds the African American identity to Whitman's list of ordinary people who constitute and contribute to American collective identity.
Paradox of social injustice => "I, Too". Hughes depicts the social inequality of black people, who are traditionally confined to servitude. He hopes, however, that this will change eventually.
Uses set meter and rhyme scheme => "From the Dark Tower". The poem's rhyme scheme is ABBA.
Symbol of wasted effort => "From the Dark Tower". Black people are the ones who plant, while white people reap.
Stone of anger and resentment => "From the Dark Tower". It depicts black people's anger at being constantly and systematically oppressed.
Uses free verse => "I, Too". Hughes' poem has a conversational tone. The free verse depicts the inner freedom that the speaker feels, and wants to transform into real freedom and equality.