The supporting details are used when you want to explain, describe, illustrate the main idea of what you are saying or writing. Details can be facts, definitions, quotations, more information or examples. These details must be important, significant in order to help to develop the central idea of your speech. With this explained, the right answer is <em>C, meaning of words</em>. The other ones are relevant and useful to explain the main idea.
The Man who was smart in school, has grown up to be unintelligent
Assertion is the key word
Explanation:
An assertion is basciay evidence to prove your point. If you are trying to make a point use evidence and prove it.
