Explanation:

- Ordinary question: A straightforward question that seeks information without suggesting any specific answer. It is neutral and open-ended.

- Relevant question: A question that relates directly to the current topic or context. It stays on point and maintains focus.

- Leading question: A question that hints or nudges toward a particular answer that the questioner expects or wants. It can be used to elicit a specific response.

- Interrogative question: A question constructed to seek information, typically starting with words like "who," "what," "where," "when," "why," or "how."