B) Disk Cleanup
C) Disk Defragmenter
E) Disk Restorer
Correct Answer: C
Solution :[c] Disk fragmentation is a utility program that locates and eliminates unnecessary fragments. As operations & processes are loaded & deleted from computer memory, free memory space is broken in little pieces. This is known as fragmentation. The performance of computer is affected by such fragments which exist in the memory. Thus to improve the performance of computer, disk fragmenter is used which rearranges files and unused disk space to increase the memory space and performance.
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