Samira has been tasked with increasing the relevance of her company’s ads. She has been told that she can use multiple headline options in her responsive search ads as a way to increase relevance. How many headlines can Samira include in a single responsive search ad?

 Up to 15 headlines
 Up to 25 headlines
 Up to 5 headlines
 Up to 50 headlines

 Including keywords in his ad text
 Decreasing the bid for the ad
 Improving the speed of his website
 Cloning the ad multiple times