Final answer:
A Snapshot is used to capture the state of a virtual machine at a specific point in time, including its RAM, settings, and disk states, allowing easy reversion to that state if needed.
Step-by-step explanation:
The method of capturing a virtual machine at a given point in time is known as a Snapshot. This is a state or copy of a virtual machine (VM) that captures the entire state of the VM at the time the snapshot was taken - including the content of the VM's RAM, the settings of the VM, and the state of all the virtual disks.
Snapshots are commonly used in virtualization environments to preserve the state of a VM before making changes, so that one can easily revert back to the prior state if necessary.
The method of capturing a virtual machine at a given point in time is called a snapshot. A snapshot is a point-in-time copy of a virtual machine's disk file and memory state. This allows you to capture and preserve the current state of a virtual machine, including its running processes and data.
Therefore, option A. Snapshot is correct.