Correct Answer: C, ETo integrate a third-party security intelligence feed with Cisco Secure Firewall Management Center using Threat Intelligence Director, you must ensure that the system requirements are met. Secure Firewall Management Center needs to be running at least version 6.2.2, so upgrading from version 6.2.3 to version 6.6 ensures compatibility and access to the latest features. Additionally, Threat Intelligence Director requires a minimum of 15 GB of memory. Since the current system has 8 GB of memory, an additional 7 GB is required to meet this requirement. Therefore, the necessary actions are to upgrade to version 6.6 and add 7 GB of memory.