Correct Answer: C, DTo enable multipath support on a Windows Server 2019 system when connecting to an iSCSI LUN, you need to perform two specific actions. First, you must select the 'Enable multi-path' checkbox on the iSCSI software initiator, as this setting allows the initiator to recognize and utilize multiple network paths. Second, you need to enable multipath I/O (MPIO) by selecting the option in the MPIO properties administrative application. MPIO provides redundancy and load balancing across multiple physical paths between the iSCSI storage and the host.