The question is asking which RPC is being used on the side and if there is a dashboard to select the correct RPC. The first answer provided was to ask what vault is being used, which is a good question to ask in order to determine the correct RPC. The second answer provided was a link to a website called cointool.app/rpcServer/arb, which provides a dashboard to select the correct RPC. The third answer provided was to look at chainlist.org to pick the good one.
Overall, it is important to determine the correct RPC before selecting one to use. The best way to do this is to ask what vault is being used, as this will help narrow down the selection. Additionally, the cointool.app/rpcServer/arb website provides a dashboard to select the correct RPC, and chainlist.org is also a good resource to look at for picking the right one.