The correct option is IP flow verify.

IP flow verify checks whether a specific traffic flow to or from an Azure virtual machine is allowed or denied by network security group rules or Azure firewall rules. It simulates the five tuple of source IP, source port, destination IP, destination port and protocol and returns the verdict and the specific rule that blocked the traffic when a flow is denied. You can run the check from the Azure portal, the CLI or PowerShell to quickly identify which security rule is responsible.

Traffic Analytics is incorrect because it provides aggregated insights and reporting from NSG flow logs and does not perform an immediate simulation that tells you which rule blocked a single flow.

Packet capture is incorrect because it gathers raw packet data from a VM for inspection and debugging and it does not evaluate NSG rules to report which rule denied the traffic.

Next hop is incorrect because it helps you determine the routing path and the next hop for a packet from a VM to a destination and it does not analyze or reveal which security rule blocked traffic.

Full AWS Practitioner Certification Question