Advertisers using the Display Network can use the reporting table in the Placements section of the Display tab to determine the:

Advertisers using the Display Network can use the reporting table in the Placements section of the Display tab to determine the:

• site on which people have seen their ad
• frequency at which an ad is shown for a given person
• countries of residence of people who’ve seen their ad
• Internet Protocol (IP) addresses of people who’ve seen their ad

The correct answer is:

• site on which people have seen their 

Explanation: With the Ads & extensions and Placements pages, you can view detailed statistics to help you evaluate the performance of your Display ads.

• Find out where your Display ads are appearing
• Analyze the audiences your campaigns reach using impressions, clicks, and conversions
• Figure out which audiences and targeting choices are working

More read: https://support.google.com/google-ads/answer/2404178?hl=en