The answer is <u>B. Showing that a portion of quote has been removed.</u>
This is used to take out parts of quotes that don't help in what you are trying to use the quote for. This shortens the amounts of words/lines taken up and it gets straight to the point of what is being said (most of the time).
The warm, vibrant room evaporates into a brisk, solitude.
Explanation
Look up words to make the sentence more awake. Try the Thesaurus. Try embedding the one sentence I typed into your sentence it could work. Maybe come up with other words.