When creating a display ad, Ad gallery lets you:

When creating a display ad, Ad gallery lets you:

  • automatically create a display ad from existing ad text
  • extend a Display campaign’s reach to Google search partners
  • choose from existing design templates
  • automatically adjust image content based on campaign performance

The correct Answer is:

  • automatically create a display ad from existing ad text

Read more here: https://support.google.com/adwords/answer/1722134?hl=en