Q: When is a “view” counted for TrueView campaigns?
A) Each time Active View recognizes TrueView
B) Each time the user watches at least two seconds of the video
C) Each time a video’s screen is 50% viewable on the page
D) Each time the user clicks or watches 30 seconds or the entire video
Correct Answer is D) Each time the user clicks or watches 30 seconds or the entire video.
Explanation:
TrueView: Views: The number of times your ad has been viewed. For TrueView in-stream, this is the number of times a viewer watches for 30 seconds of your video (or the duration if it’s shorter than 30 seconds) or engages with your video (in-stream), whichever comes first. For TrueView video discovery, this is the number of times viewers choose to watch your ad by clicking a thumbnail.
Read more here: https://support.google.com/displayvideo/answer/6298774