These lines are taken from "The Lake Isle of Innisfree" by William Butler Yeats. The theme of these lines is related to the peace. The speaker might be feeling trapped, bussy, sad and that is the reason why his motivation in life is to achieve some peacefulness. So we can say that the main theme is: Peace.
The answer to this would be B, because it cannot be used as a sentence by itself. The other three can be used as a sentence without needing another fragment of the sentence. Another example of answer B is that it is a dependent clause, and the other three are independent clauses.
So B is your answer.
Answer: a sentence that expresses the main idea of the paragraph in which it occurs.
Explanation:
Answer:
They are: who, which, whom, what and whose. These are also known as wh-words.
Explanation: