To help teach others how to learn different subjects, including fun activities and to progress.
You didn't provide the sentences, however, they probably contain things like vivid descriptions of things or their smells or how they feel when you touch them. If they are extremely realistic, then they are really vivid and this should be your correct sentence.
Loss of individualism. If everyone is the same, everything is the same day after day in a cubicle with no windows or distinct decor differing from one room to the next, there is no individuality
1. (D) The loneliness of human beings
2. (A) The heron feeding on the snake in the pond
3. (D) The rabbits are part of George and Lennie's dream of one day having a farm of their own
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