健身器材商 Gymnex 认为其网站上有部分网页的成效较差。Gymnex 的团队明白，找出这些网页对于转化率优化 (CRO) 至关重要。 以下哪项措施有助于 Gymnex 找出 CRO 期间最需要留意的网页？

Reviewing the website's funnels or user flows is the most effective approach because it directly reveals where users encounter friction or drop off in their journey. This data-driven method pinpoints specific pages that are underperforming and hindering conversions, making them prime candidates for CRO efforts. Comparing with other businesses' websites is less effective because every business has unique goals and user bases, making direct comparisons unreliable for identifying internal underperformance. Having designers check the aesthetic design is insufficient as poor performance often stems from usability or content issues, not just appearance. Checking the "Landing pages" section in Google Ads only shows the performance of pages used in ads, not necessarily all underperforming pages across the entire website.