阿卜一直在研究以用户为中心的组织为何能取得成功。在研究期间，阿卜逐渐意识到，这类组织中的每个人都在为持续优化用户体验贡献自己的力量。 那么，营销者为持续优化用户体验贡献了什么力量？

The correct answer is "在各个广告平台进行测试，然后根据测试结果进行调整以改善效果" (testing across various ad platforms and adjusting based on results to improve performance) because marketers directly influence user experience through advertising. By testing different ad creatives, targeting, and platforms, they can optimize the initial touchpoints users have with a brand, ensuring a more relevant and positive introduction. This continuous optimization of ad performance directly contributes to a better overall user journey from awareness to conversion. "与开发者相互配合，针对网站测试和应用改进设计合适的方案" (collaborating with developers to design suitable solutions for website testing and application improvements) is more aligned with product or development teams. "支持并鼓励测试，为测试提供充足的预算" (supporting and encouraging testing, providing sufficient budget for testing) is a management or leadership role. "跟踪可测成果，并将数据分享给各个团队" (tracking measurable results and sharing data with various teams) is a general analytical function, not specific to a marketer's unique contribution to optimizing the user experience through their core function.