THE ANSWER IS A A IS THE ANSWER
That would be D the gramicological errors were unmistakable
Well, let's see... I don't know what a coordinating conjunction is off the top of my head, but I know B isn't the answer, since 'independent' means 'highly capable of handling oneself'. C <em>certainly</em> isn't the answer, simply because you can see by this answer they obviously do combine with a dependent clause from time to time. That leaves us with D and A, which both leave the same term. However, I do believe I can use the word preceding <em>conjunction</em>, which is <em>coordinating</em>, to realize that 'and,' 'but,' and 'or' are coordinating conjunctions. Seriously, D cannot be the answer because not every sentence starts with any of those. So your answer is A.
I don't see all of the answer choices, but those two lines definitely maintain the lighthearted tone in the poem. wordsworth is describing a positive experience he had with nature, so i would pick whichever choice that says those lines express his happiness.