如要在報表中查看顧客獎勵計畫的會員狀態，應該將自訂維度的範圍設為下列何者？

The correct scope for a custom dimension tracking customer reward program membership status is "User." This is because a user's membership status (e.g., "Gold," "Silver," "Non-member") is an attribute that persists across multiple sessions and activities for that specific user. "Hit" scope would be too narrow, as it would only apply to a single interaction. "Session" scope would also be too narrow, as a user's membership doesn't change with each new session. "Product" (or "Item") scope is irrelevant here, as membership status is about the user, not a specific product. By setting the scope to "User," you can analyze how membership status influences user behavior over time and across different visits.