Choose the correct response. This is the first time she has gone to a baseball game. She has ... been to a baseball game before.

The correct answer is d. ever. Explanation: The sentence "This is the first time she has gone to a baseball game" implies that she has never been to a baseball game before. When talking about first experiences, we often use "ever" in questions or negative statements related to past experiences. Therefore, "ever" fits best in this context to indicate if she had any experience before.