* "Answers" (with quotation marks) is used when you are referring to the word "answers" itself, for example, when discussing a word list or grammar.
* "Answers?" (with a question mark) is used when you are asking a question about answers, for example, "Do you have any answers?"
* "Answers!" (with an exclamation mark) is used to emphasize answers, for example, "We finally have answers!"
* Answers. (with a period) is used at the end of a sentence that provides answers, for example, "The answers are below."
* Answers, ... (with a comma) is used to introduce a list of answers, for example, "Answers, please."
Please provide me with the context, and I can tell you which punctuation is appropriate.