____ ads can show on YouTube search results before they’re approved, but they can’t run on YouTube or the Google Display Network until fully reviewed and approved.
The correct answer is:
Eligible ads can run on Google search pages before they’re approved, but won’t be shown to people who have turned on SafeSearch filtering. Eligible ads can’t run on our Display Network or Search Partners until they’re reviewed and approved.
Read more here: https://support.google.com/adwords/answer/188700?hl=en