What material is used more often than any other for allusion in literature? (select all that apply.) the works of william shakespeare the work of charles dickens mythology the bible

In paragraph 5, president obama remarks: “you know, when trayvon martin was first shot i said that this could have been my son. another way of saying that is trayvon martin could have been me 35 years ago.” how does president obama use rhetoric in this quote to contribute to the overall meaning of his speech?