Answer: A. Crazy Quality Wax is better than other car waxes.
Explanation: <em>The controlling idea contains your opinion about the topic. It shows what direction you are going to take in writing about the topic. It helps the reader understand your purpose for writing the paragraph or essay. </em>
In this case, the author, or writers controlling idea was trying to convince the reader that Crazy Quality Wax is better than other car waxes.
