Which best states the overall structure of Walden ?

Walden is organized largely around the changing seasons and Thoreau’s experiences and reflections as he lives close to nature at the pond. This gives the work a year-in-nature progression, rather than a before-and-after comparison or a series of problems resolved by his retreat. So the best choice is “The work describes Thoreau’s thoughts over the course of a year spent immersed in the natural world.”

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