Which of these can be created to run on the Display Network?

A) VideoPlus ads
B) TrueView and VideoPlus ads
C) Homepage expandable Masthead ads
D) Lightbox ads and TrueView video discovery ads

The correct answer is:

D) Lightbox ads and TrueView Video Discovery ads

Explanations and Referral URLs: Lightbox ads are expandable, rich media display ads that run across the Google Display Network. https://support.google.com/adwordspolicy/answer/6135143

Video discovery ads appear in places where viewers discover content, like on YouTube search results, next to related videos, on the YouTube homepage, and on partner sites and apps.

https://support.google.com/adwords/answer/2383007