Which one of the following quotes best captures the main concern of the passage?

• A. “Nouns and verbs are the two indispensable parts of writing. Without one of each, no group of words can be a sentence . . ."
• B. “Strunk and White caution against too many simple sentences in a row, but simple sentences provide a path you can follow when you fear getting lost in the tangles of rhetoric . . .”
• C. “Bad grammar produces bad sentences.”
• D. “The telling clause here is Unless he is certain of doing well.”.