A technician is tasked with repairing a Windows 7 system including the removal of recently
installed files and software. Which of the following system restoration methods would be the
LEAST destructive way to achieve this?

A.
System Restore

B.
System Image Recovery

C.
CHKDSK

D.
Windows Memory Diagnostic

Explanation:
http://windows.microsoft.com/en-us/windows-vista/what-is-system-restore