To monitor purchases across both mobile web and in-app platforms for your new line of camping tents, you should run an Instant Report in Campaign Manager 360, utilizing the total conversions metric.​

• Run the Reach Report with impression reach metric
• Run the Multi-device Report with cross screen conversion metric
• Run the Path to Conversion Report with total revenue metric
• Run the Instant Report with total conversions metric

The correct answer is: Run the Instant Report with total conversions metric

Explanation: Instant reporting in Campaign Manager 360 provides immediate access to performance data, eliminating the need to wait for report generation and download. This feature is particularly beneficial for quick performance checks, ad-hoc analyses, and routine evaluations of common dimensions and metrics. By employing the total conversions metric within an Instant Report, you can promptly assess the number of purchases resulting from your ads across both mobile web and in-app platforms, facilitating timely and informed decision-making. support.google.com/campaignmanager