A running shoe company wants to reach “avid marathon runners” instead of just “sports fans”. Which targeting method should this advertiser use?
Affinity audiences
Custom affinity audiences
Managed Placements
Demographic targeting
Explanation:
With custom affinity audiences, you can create audiences that are more tailored to your brands, compared to our broad, TV-like affinity audiences. For example, rather than reaching Sports Fans, a running shoe company may want to reach Avid Marathon Runners instead.
https://support.google.com/partners/answer/2454017