An advertiser is running video ads on a placement-targeted campaign. Recently, the play rate for video ads has decreased. To understand if the decreased play rate is due to the same users seeing the ad repeatedly and therefore not watching the video again, this advertiser should:

An advertiser is running video ads on a placement-targeted campaign. Recently, the play rate for video ads has decreased. To understand if the decreased play rate is due to the same users seeing the ad repeatedly and therefore not watching the video again, this advertiser should:

Answer -  run a Reach and Frequency report