Well usually, the main idea<span> is in the first sentence, the next most common placement is in the last sentence of a paragraph. This is because the author commonly gives supporting information first and then makes the point in the last sentence. </span>
Answer:
disagree. why would someone randomly laugh for no reason other than they are happy. you don't laugh at things that are sad. you laugh because something made you happy.
B is correct because all of the verbs are in the same tense.
A is the answer because the sentence is obviously asking the reader if they can identify Beethoven's style.
B cannot be the answer because the sentence uses the question word "can"
C cannot be the answer because, again, the sentence is asking a question.
D cannot be the answer because the sentence is not giving a command, but asking a question.