Construct a question that every answer in the list is correct and reasonable for it.

snake, spiders, lions, bear, sharks
name an animal whose bite can kill.

baseball cards, baseballs, autographs, baseball gloves
name something valuable that a baseball fan might collect

mouthwash, mouth off, mouth-to-mouth, mouthpiece, mouth of a river, mouthguard, mouthwatering

give me a word or phrase beginning with the word "mouth."