How does the central idea of this passage serve as social commentary?

The answer is D: It shows how a power structure began to develop in a society that was meant to be classless.

Explanation:

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i think it's either 'to expose the corruption of the communists in russia', or 'to criticize animal brutality by communists in russia.'  

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d. therefore pilots wisely train these cubs by various strategic tricks to look danger in the face a little more calmly.

c or d they are the same