Answer is D: Intelligent Traffic Offload is a VM-Series firewall Security subscription that, when configured with the NVIDIA BlueField-2 DPU, increases capacity throughput for the VM-Series firewall. The VM-Series firewall and the BlueField-2 DPU must be installed on an x86 physical host running Ubuntu 18.04, with kernel version 4.15.0-20. The VM-Series firewall must be deployed in virtual wire mode.

Version 11.1 and Later In previous releases, ITO required that you deploy your VM-Series firewall in virtual wire mode. This limitation prevented deployments in Layer 3 mode supporting static or dynamic routing. This release removes that limitation by allowing you to deploy your VM-Series firewall with Intelligent Traffic Offload for L3 traffic supporting static and dynamic routing.

D. Vwire (Virtual Wire) mode Virtual Wire mode allows the firewall to inspect traffic between two network segments without making any Layer 2 or Layer 3 modifications. This is ideal for implementing Intelligent Traffic Offload, where the firewall can offload specific traffic based on defined policies.

Virtual wire mode "vwire" is the correct answer. https://docs.paloaltonetworks.com/vm-series/11-1/vm-series-deployment/set-up-the-vm-series-firewall-on-kvm/intelligent-traffic-offload

https://docs.paloaltonetworks.com/vm-series/11-0/vm-series-deployment/set-up-the-vm-series-firewall-on-kvm/intelligent-traffic-offload