Melissa’s been running a Google App campaign with one ad group and she’s looking to optimize the campaign by creating additional ad groups. What should Melissa do next?
Create a new campaign and ad group for each different theme.
Replace her existing ad group with a new one using a different theme.
Maintain one evergreen ad group, and use additional ad groups to explore different themes. – CORRECT
Maintain the same ad group, and introduce additional assets based on various different themes.