Answer: Option D
Answer: (d)(a) is rejected because ignorance is the opposite of knowledge. Now, knowledgeable is not the same as erudite. Knowledge can come from any source. There are knowledgeable persons who have never touched a book in their lives. Erudition, on the other hand, is scholarly learning for which books are essential. An erudite person is thus highly literate. An illiterate person is one who does not know how to read.