Which of the following describes the function of vSphere?

The correct answer highlights that vSphere is a solution designed specifically for managing virtualized infrastructure in cloud environments. vSphere is VMware's cloud computing virtualization platform and serves as a powerful suite that facilitates the creation and management of virtual machines (VMs), allowing organizations to run multiple operating systems and applications on a single physical server efficiently. It provides essential features like resource allocation, load balancing, and automation, which are critical in cloud computing scenarios to optimize resource usage, ensure scalability, and improve overall infrastructure management.

Regarding the other options, while they might touch upon related areas, they do not accurately encompass the primary function of vSphere. High availability solutions for physical servers typically pertain to traditional server management rather than virtualization. Database management is a specific application area that falls outside the direct management capabilities of vSphere. The mention of integrated networking solutions is relevant but not comprehensive enough to define vSphere, as it is primarily focused on the broader management of virtualized compute resources rather than just networking for VMs.