What type of IPv6 address should you use when you have multiple routers on a subnet and want hosts to use the nearest router for packets that should be delivered to remote networks?

anycast

Explanation:

Anycast -

It refers to as the routing methodology and the networking address where only one destination address has more than two pathway for the end destination, is referred to as an anycast.

In this case, the router has the capability to select the pathway to reach the destination, depending on the latency measurement, cost, distance and hops.

Hence, from the given information of the question,

The correct answer is anycast.