Viewable cost-per-thousand impressions (vCPM):
§ applies to all ads that appear in Google Search and on the Display Network
§ lets you pay only for the impressions that become viewable
§ lets you bid based on AdWords’ projected views of your ad
§ counts an ad as “viewable” when 75% of it is visible on the screen for 5 seconds or more
The correct Answer is:
§ lets you pay only for the impressions that become viewable