Which report summarizes ad performance by campaign for a selected date range and provides information on metrics campaign by campaign?

The correct answer is "Campaign report." The Campaign report summarizes ad performance by campaign for a selected date range, providing detailed information on key metrics such as impressions, clicks, and conversions, broken down by each individual campaign. This report allows advertisers to evaluate the performance of their campaigns, compare the effectiveness of different campaigns, and make data-driven decisions for optimization. It is an essential tool for understanding how each campaign is performing in relation to its goals and provides insights that can help in budget allocation, targeting, and creative adjustments. In contrast, the Advertised Product report focuses on individual product performance, and the Targeting report centers around audience targeting strategies, neither of which provide a comprehensive overview of campaign-level performance across multiple metrics.