The correct answer is B) conservatives were considered "kooks."
The reason may a voter have in 1964 for not voting for a conservative was that conservatives were considered "kooks."
It is true that in the 1960s, conservatives were considered by many people as "crackpots" or "kooks" by liberal people. That was the case of Republican Senator Barry Goldwater that expressed some questionable comments when he accepted the nomination of the Republican Party to compete in the presidential elections of 1964. In that time, US citizens considered conservatives as radical or extremist people. That facilitated the victory of Democratic candidate Lyndon B. Jhonson.
The other options of the question were A) conservatives were violent. C) liberals were the only ones who made significant changes. D) no one knew what a conservative was.
