Which feature is a prerequisite for Proactive High Availability (HA)? (Choose the best answer.)

vCenter High Availability (HA) provides high availability for the vCenter Server itself, not for the underlying ESXi hosts or their virtual machines.

vSAN Cluster is a software-defined storage solution and, while often used in vSphere environments, is not a direct prerequisite for Proactive HA's host monitoring and VM migration capabilities.

Predictive Distributed Resource Scheduler (DRS) is an enhancement or component of Proactive HA that uses machine learning to predict resource needs, but the fundamental DRS (D) is the core prerequisite for any automated migration.

vSphere Distributed Resource Scheduler (DRS) is a prerequisite for Proactive High Availability (HA) because Proactive HA relies on DRS to automatically migrate virtual machines from hosts experiencing predictive hardware degradation. DRS provides the underlying mechanism for load balancing and VM movement based on host health signals.