Which Cisco Rapid Threat Containment mitigation action is enabled by integrating pxGrid Adaptive Network Control with Cisco ISE and Cisco Secure Firewall Management Center?

'Reject' is not a specific, named mitigation action directly enabled by this integration in the context of ANC policies, although it conveys a similar outcome to blocking network access.

'Suspend' implies a temporary pause or isolation, which might be an effect of blocking, but 'block' is the direct and specific mitigation action provided for network access control.

'Terminate' typically refers to ending a connection or session; however, the primary mitigation action for network access control in this integration is to 'block' future or ongoing network access for a compromised endpoint.