Answer:
Option "C" is correct
Explanation:
Informal definition can be regarded as informal style used in writing or making speech that involves using casual as well as familiar words. This is usually involves colloquial use of language. It is often more direct compare with formal style. Using of abbreviations as well as short sentences, and contractions may be found in informal definition of words. It is usually contains more of casual and spontaneous words.
The answer should be D as Tesla was a compelling scientific figure indeed. He wanted to provide the electricity to the world for free.
Kubla Khan was based on Coleridge's dream vision. He became disillusioned and no longer dealt with Romantic ideals. Instead of them, he focused on philosophy and literary criticism.