The quotation from Mark Twain in Paragraph 4 is intended to illustrate（）.

The quotation from Mark Twain in Paragraph 4 is intended to illustrate（）.
A.The distinction between poor and effective communication
B.The importance of having a big vocabulary
C.The necessity of knowing fine shades of meaning
D.The impressiveness of using the right words at the right times.
正确答案：The distinction between poor and effective communication