How does the phrase "free to contemplate and aspire to the knowledge of the unknown” support the speaker’s claim?

The phrase describes what people can do when they have the mindset the speaker advocates: they are free to think about and pursue knowledge of things not yet understood. That supports the claim by showing a possible result of the mindset, which is an appeal to logos. It does not set up a contrast between the unknown and the true, as choice B suggests.

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