在营销管理工具中，哪项功能可以帮助您了解广告在推动特定漏斗下层业务成果方面的成效？

Conversion tracking is the correct answer because it directly measures user actions (conversions) that occur after an ad interaction, such as purchases, sign-ups, or downloads. These actions represent lower-funnel business outcomes. By tracking conversions, marketers can attribute these valuable actions back to specific ad campaigns, allowing them to assess ad effectiveness in driving desired business results. Campaign statistics provide overall performance metrics but don't specifically link ad views to lower-funnel conversions. Audience insights offer demographic and behavioral data about the target audience but don't measure ad effectiveness. Benchmarking compares performance against industry standards but doesn't track specific conversions from an ad.