Read the excerpt from martin luther king jr.’s "i have a dream” speech. but one hundred years later, the negro still is not free. one hundred years later, the life of the negro is still sadly crippled by the manacles of segregation and the chains of discrimination. one hundred years later, the negro lives on a lonely island of poverty in the midst of a vast ocean of material prosperity. how does the repeated phrase support king’s message? a. by emphasizing that time has passed without social progress b. by suggesting that freedom will come eventually without effort c. by insisting that people cooperate to achieve a common goal d. by hinting that all americans should strive for material wealth