“Please carry . . . . . . . . playing, I enjoy piano music,” she urged. A. to B. by C. on D. at

The correct answer is “on.”

The word “on” is used to indicate a continuous action or state. In this case, the woman is asking the person to continue playing the piano.

The other options are incorrect because they do not convey the same meaning.

• The word “to” is used to indicate a goal or destination. In this case, the woman is not asking the person to go somewhere to play the piano.
• The word “by” is used to indicate a means or method. In this case, the woman is not asking the person to play the piano in a particular way.
• The word “at” is used to indicate a specific time or place. In this case, the woman is not asking the person to play the piano at a particular time or place.