The theme is the message you get from the story. Central idea is just another word for main idea which would be the point or key topic of the story. Hope I I helped and didn't confuse you
If Walden Pond was unfathomed, then it was deep.
Unfathomed, in the context with water, can mean
that its depth is not certain, that the water is extending downward from the
surface. Unfathomed means it cannot be measured because it is extremely deep.
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Answer:
sorry I don't know the answer
