In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.
If there is a subject of really ______ interest and utility, it is the art of writing and speaking one's own language. _______. It is the basis of culture, as we all know, but it is infinitely more . that, it is the basis of business. . salesman can sell anything unless he can explain the merits of his goods in effective language, or can write . advertisement equally effective, or present his ideas, and the facts, in a letter.one's own language____. It is the basis

Options

A. effective
B. effectiveness
C. effectivity
D. effectively

Answer

D