Rule 2 is blocking HTTPS access (port 443) and has a priority of 500.
Changing Rule 3 (ports 60-500) and giving it a lower priority number will allow access on port 443.
Note: Rules are processed in priority order, with lower numbers processed before higher numbers, because lower numbers have higher priority. Once traffic matches a rule, processing stops.
Incorrect Answers:
A: HTTPS uses port 443. Rule6 only applies to ports 150 to 300.
C, D: Rule 1 blocks access to port 80, which is used for HTTP, not HTTPS.
Reference:
https://docs.microsoft.com/en-us/azure/virtual-network/security-overview