Explanation

Box 1: No
Session Persistence is None.
Box 2: Yes
Web requests uses the HTTP protocol, not the TCP protocol.
Box 3: No
Note: Azure Load Balancer provides health probes for use with load-balancing rules. Health probe configuration and probe responses determine which backend pool instances will receive new flows. You can use health probes to detect the failure of an application on a backend instance. You can also generate a custom response to a health probe and use the health probe for flow control to manage load or planned downtime.
When a health probe fails, Load Balancer stops sending new flows to the respective unhealthy instance.
References:
https://docs.microsoft.com/en-us/azure/load-balancer/load-balancer-custom-probe-overview