I think the answer would be - D. By using old fashioned words with hidden meanings.
Shakespeare used a lot of "old-fashioned" words, or so we call them. It made his plays seem more, "poetic", and gave them more "feeling". Of course, nowadays, we use a lot of slang, and though Shakespeare plays may be quite "boring" to us now, back then, they made him famous.
Of course there is a chance this answer is wrong -- if it is, do tell me.
