Supporting details can do all of the enlisted options except introduce the main idea. Supporting details are there to support the main idea, so of course they cannot introduce it. They are the result of the main idea, not its creator.
Answer:Getting burned is an example of a slang
Explanation: A slang is an informal langauge that is commonly used and known by a particular society and it is only well understood within that society. There many slang words that are used in the United States and this is one one of them , getting burned means you got hurt .
I am certainly not reading all of this but stay safe tho
Answer: I would say "The Declaration of Independence was signed on July 4th, 1776."