What action should be taken to expand a virtual hard disk after noticing it's almost full?

To expand a virtual hard disk, editing the virtual hard disk settings is the appropriate action. This process typically involves accessing the virtualization software's management interface, where you can find options to modify the properties of the virtual hard disk. By selecting the relevant settings, you can increase the allocated size of the disk, thereby providing more storage space for the virtual machine.

This action is critical as virtual hard disks have a predefined size limit, and when they reach full capacity, the operating system will struggle to function properly due to insufficient disk space. Expanding the disk allows for continued use of the virtual environment without interruption.

The other options would not effectively solve the issue of limited disk space. For instance, simply removing the virtual hard disk would lead to loss of all data contained within it. Inspecting the virtual hard disk may provide useful information about its current state, but will not change its size or solve the issue of being nearly full. Browsing for other disk options might suggest alternative methods or tools, but would not directly address the need to expand the specific existing virtual hard disk.