Reference Material:

https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-policy.html
reason:
Geoproximity routing policy – Use when you want to route traffic based on the location of your resources and, optionally, shift traffic from resources in one location to resources in another.
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-policy.html:
"Geoproximity routing policy – Use when you want to route traffic based on the location of your resources and, optionally, shift traffic from resources in one location to resources in another."
Answer is C