Correct Answer: A, C, DTo ensure that R1 is configured properly for load balancing BGP routes, you need to perform the following actions: First, verify that the routing table on R1 has BGP routes for 203.0.113.128/25 with multiple next hops to ensure that multiple paths are available. Next, verify that there is a load balancing export policy under routing-options for the received BGP routes on R1, which would ensure that load balancing is appropriately handled on the router. Finally, verify that the multipath option is configured under protocols bgp on R1, enabling the router to use multiple paths for BGP routes. The configurations on R2 and R3 are not required to enable load balancing on R1.