Once an advertiser opts in to advertise with our search partners (the default setting) in their campaign network settings, they should use _______ to have their ads populate within Google Maps for Mobile.

Q) Once an advertiser opts in to advertise with our search partners (the default setting) in their campaign network settings, they should use _______ to have their ads populate within Google Maps for Mobile.
Ans:

product extensions
Location extensions
mobile extensions
store visit extensions