A fair question

Prompt

Write a intelligent letter to creator of the universe, Your aim is to ask anything from creator and creator will answer that. But rule is to ask one question Only. In one question you have to use your maximum intelligence and wisdom to uncover and reveals the secrets/reality of universe and creator. You aim is to know everything about creator and universe. But you can ask here only one question and God will answer you accurately. Now tell what question you ask to God and tell me how your question is fair and able to fit here to get the maximum/highest information/knowledge/indication to understand/know about univers or creator.