作为一名推广活动营销人员，Charlotte 一直在积累经验，并且准备首次尝试制定衡量策略。她应该采取哪些步骤来构建坚实的衡量基础？请选择 3 个选项。

To build a solid measurement foundation, Charlotte should start by defining her ad account's Key Performance Indicators (KPIs) and goals, as these provide the benchmarks for success. Next, she needs to capture the right signals, meaning collecting relevant data points that directly inform those KPIs. Collaborating with a data analyst is crucial for interpreting complex data, identifying trends, and ensuring the accuracy of her measurement approach. Re-evaluating target audience targeting strategies ensures that the campaign is reaching the most relevant audience, which directly impacts the quality of the data collected and the effectiveness of the measurement. Finally, choosing experiments that align with her needs allows her to test hypotheses and optimize campaigns effectively.