LSAT-6-2-20

20.Policy Adviser: Freedom of speech is not only a basic human right; it is also the only rational policy for this government to adopt. When ideas are openly aired ,good idea flourish, silly proposals are easily recognized as such, and dangerous ideas can be responded to by rational argument.Nothing is ever gained by forcing citizens to disseminate their thoughts in secret.

20. The policy adviser's method of persuasion in recommending a policy of free speech to the following?

(A) a circular justification of the idea of free speech as an idea that flourishes when free speech is allowed

(B) advocating respect for basic rights of citizens for its own sake

(C) a coupling of moral ideals with self-interest

(D) a warning about the difficulty of suppressing the truth

(E) a description of an ideal situation that cannot realistically be achieved.

这个题目我在B/C之间犹豫了很久,但是还是选错了.答案是C是如何选择答案的.求教了