Which of the following most directly led to creation of the Great Society programs outlined in the excerpt?

a. There was a significant economic downturn in the United States in the years following World War II.
b. The United States military had failed in its efforts to defeat communism in Vietnam.
c. Many Americans continued to live in poverty even though the US was experiencing unprecedented economic growth
d. A Baby Boom occurred in the decades following WWII as men returned from war and had greater opportunities for financial security