Answer:
To reach a broad audience for his scooters
Explanation:
Google Display Ad allows business owners to runs ads and connect with audiences through million of other website, this is done by delivering advertisement to people as they browse the net.
By using Google Display Ad campaign to promote his new line of scooters , his ads can appear on websites relevant to scooters and therefore connect him to his potential audience,
Build awareness" as his marketing objective makes it reaches audiences as they browse websites and a comparative advantage over other competitors