Refer to the exhibit. The exhibit contains the configuration for an SD-WAN Performance SLA, as well as the output of diagnose sys virtual-wan-link health-check. Which interface will be selected as…

port2 is not selected because the exhibit's health-check output would indicate it either fails to meet the Performance SLA criteria or performs worse than port1.

port4 is not selected because the health-check output would show it as either down or performing below the minimum required SLA thresholds.

port3 is not selected because the exhibit's health-check output would indicate it either fails to meet the Performance SLA criteria or performs worse than port1.

In FortiGate SD-WAN, the virtual WAN link selects the best performing member interface based on configured Performance SLA rules and real-time health checks. The `diagnose sys virtual-wan-link health-check` output would show that port1 currently meets the SLA criteria and likely has superior performance metrics (e.g., lowest latency, jitter, or packet loss) among all active interfaces, making it the preferred choice.