Answer:
D. is the answer of the question
You're Spanish, aren't you? i think that would be correct because a semicolon is for when there are 2 complete ideas in a sentence.
The correct answer is "The images of the woods, the lake and the floating swans combine to create a peaceful or tranquil mood". By describing the sky as "still", the water as "brimming" and the paths as "dry" the author paints a peaceful imagery as he opens his poem.