The evidence from President Johnson's speech best supports the generalization that the freedom to vote is crucial to the maintenance of democracy. Thus, option (A) is correct.
A democratic system of government is one in which supreme authority is placed in the people and wielded directly or indirectly by them through a system of representation that typically includes periodic free elections.
President Johnson's speech most strongly supports the generalization that the right to vote is essential to the survival of democracy. Therefore, it can be concluded that option (A) is correct.
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