Directions: In the following question, four statements with blanks are given. Choose the option which fills in the blanks, the maximum number of times.

A. He behaves as if he is an exceptionally ________ person incapable of understanding even basic Maths. B. The room had a very ________ appearance due to the strange colours used. C. Your ________ replies were music to the professor’s ears. D. In a cosmopolitan society, you cannot afford to be ________ and witless.