An Advertiser Purchasing Display Advertising Through Other Ad Networks Can Still Benefit From Using Google Ads Display Ads Because:

• the ad can appear multiple times on a page to reinforce the advertiser’s message
• the ad will show on all ad networks and will reinforce the advertiser’s message
• she can infinitely loop animated image ads
• she can fill in the gaps of niche and mass–marketed sites using Google Ads targeting options

The correct answer is:

• she can fill in the gaps of niche and mass–marketed sites using Google Ads targeting options.