Fill in the blank with the appropriate term.
The ______________ tool is used to reduce the number of unnecessary files on a hard disk to free up disk space and to help a computer run faster.

Answer: Disk Cleanup

Explanation:
The Disk Cleanup tool is used to reduce the number of unnecessary files on a hard disk to free up disk space and to help a computer run faster. It removes temporary files, empties the Recycle Bin, and removes a variety of system files and other items that are no longer needed.