What does Johnson claim about the vocabulary in his dictionary?

• A. He increased the dictionary's size by adding many words.
• B. He has augmented the vocabulary.
• C. He relied on a single source.
• D. He avoided collecting quotations.

Answer: (B)

The main idea here is that Johnson presents his dictionary as a way to enlarge the English language by adding to its vocabulary. In his preface, he frames the project as not merely compiling words, but actively augmenting the language—introducing and clarifying terms so that readers have a richer, more usable vocabulary. This emphasis on expanding what English can express is what makes the statement about augmenting the vocabulary the best answer.

The other points don’t fit as well because the work isn’t described as relying on a single source, nor as avoiding quotations; Johnson draws on many authorities and uses a wealth of quotations to illustrate usage, which supports the idea of enlarging and clarifying the vocabulary rather than restricting or merely increasing surface size.