Which Rapid PVST+ command ensures this switch is the root bridge for VLAN 200?

To ensure a switch becomes the root bridge for a specific VLAN, you must configure it with the lowest possible bridge priority. The lowest configurable priority value in Rapid PVST+ is 0. By setting the priority to 0 for VLAN 200, this switch will have the lowest priority and thus become the root bridge. The command "spanning-tree vlan 200 root primary" is a macro that sets the priority to 24576 or 4096 less than the current root, whichever is lower. While often effective, it doesn't guarantee the absolute lowest priority. Priorities like 614440 and 38813258 are very high, making it extremely unlikely the switch would become the root bridge.