How can a client track performance by product category and gender in their shopping ads?

The choice that states to create a campaign by product category and gender, and use product groups is the most effective approach for tracking performance by product category and gender in shopping ads. This method allows for precise organization and optimization of ads, enabling the client to evaluate how different product categories perform among various gender demographics.

By structuring the campaign this way, the client can segment their ads based on both product type and gender, leading to more targeted marketing efforts. It provides the flexibility to monitor key performance indicators for each combination of category and gender, facilitating informed decision-making regarding inventory, promotions, and ad placements.

In contrast, the other options may lead to less efficient tracking. For instance, creating a campaign for each gender with product groups by apparel type may result in an unwieldy number of campaigns, making management and insights more cumbersome. A catch-all campaign for all products would fail to provide meaningful insights into performance by category or gender. Similarly, setting up campaigns purely by product category and using product groups for gender overlooks the direct relationship between the two, leading to missed opportunities for analysis and optimization.

Thus, the selected strategy maximizes clarity and actionable data, which is essential for effective advertising campaigns.