The correct answer to this is A. These two men were part of the "Beat generation." In fact, historians generally say that Kerouac was the one who came up with the term "beat" to describe the attitudes of his generation. He is said to have used the term to mean that his generation was being beaten down by the society in which they lived.
None of these other options is a possibility. The Hippies did not come around until the 1960s. The term "me generation" is more commonly applied to the 1970s. Zoot suits were associated with young Hispanic men in the Southern California in the 1940s.