Which threshold is described for counting a viewable impression?

Which threshold is described for counting a viewable impression?

• A. More than 50% on screen for more than two seconds
• B. More than 70% on screen for one second
• C. 100% visibility for five seconds
• D. Any visibility counts

Answer: (A)

Viewable impressions are about counting only when someone actually sees the ad for a meaningful moment. The described threshold—more than half of the ad visible on screen for more than two seconds—ensures a real chance that the viewer noticed the ad, not just a quick, fleeting glance or a tiny corner of the image. This threshold weeds out ultra-short or barely visible placements while still allowing practical, common exposure lengths to count as views. The other options are less appropriate: requiring 70% visibility for one second would miss many genuine views that are just over half but shown longer; demanding 100% visibility for five seconds is too strict and excludes many valid exposures; counting any visibility would inflate impressions with trivial glimpses.

Viewable impressions are about counting only when someone actually sees the ad for a meaningful moment. The described threshold—more than half of the ad visible on screen for more than two seconds—ensures a real chance that the viewer noticed the ad, not just a quick, fleeting glance or a tiny corner of the image. This threshold weeds out ultra-short or barely visible placements while still allowing practical, common exposure lengths to count as views. The other options are less appropriate: requiring 70% visibility for one second would miss many genuine views that are just over half but shown longer; demanding 100% visibility for five seconds is too strict and excludes many valid exposures; counting any visibility would inflate impressions with trivial glimpses.