The suggested answer is C, D, E.
Data center virtualization with vSphere 6.x provides several notable benefits. Firstly, it delivers high application availability by allowing for features such as live migration, fault tolerance, and distributed resource scheduling. Secondly, virtualization helps reduce capital and operating expenditures by optimizing the use of physical hardware, reducing the need for additional servers, and lowering power and cooling costs. Finally, it increases IT productivity by enabling faster deployment of applications, simplifying management, and improving resource efficiency.