because its asking which is an example of apostrophe and apostrophe means a type of punctuation which is (') so there for the answer is cavern's mouth because that is the only one with and apostrophe!
The answer is Cavern's mouth because it has an apostrophe in "Cavern's". Someone in the comments said the answer was "Oh, ye!
", but just in case that wasn't the answer, this is what I picked. I wish you good luck on your other assignments!
