A adjective clause is a is a dependent clause used as an adjective. Most of the time it begins with pronoun for a example which.
So it would most be essential when your "looking at a sentence that starts with a pronoun (most likely in a short story) and it sounds more of a question. It would also be a dependent clause and would function as an adjective as in <span>answering questions</span> for example: Which one?"
Hope this helps!
Simile
Simile an expression including the words "like" or "as" to compare one thing with another. "Life is like a box of chocolates" defines itself to be simile.
Is there anyway to emphasize that question you're asking?