Below question has with a part of it underlined. The question is followed by four alternatives to replace the underlined part of the sentence. Choose the best alternative which is grammatically correct._x005F_x000D_ In this particular job we have discovered that to be diligent is more important than being bright.

• A. for one to be diligent is more important than being bright.
• B. by being diligent is important than being bright.
• C. being diligent is more important than being bright.
• D. diligence is more important than brightness.