Explanation
Correct answer: B.
Choice B is the best answer because it best describes the overall structure of the text. The text first establishes the setting, a "still lagoon," and then goes on to provide more details about the lagoon by presenting several descriptive images of nature, including a lizard that "shrills his tune," "oozing lichens," and "thick, grey and humid" vapors.
Why the other choices are wrong
Choice A
Choice A is incorrect. Instead of simply naming species, the text presents descriptive images of nature; further, instead of naming animals and then moving on to name plants, the text refers first to a plant ("the wild rice"), then to two animals ("the lizard," "the wild goose"), then to another plant ("rushes"), and so on.
Choice C
Choice C is incorrect because the text does not draw any comparison between nature and human emotions; it does not refer to human emotions at all.
Choice D
Choice D is incorrect. While the text does begin by identifying a specific location, a "still lagoon," it makes no mention of a person living there.