Which statement describes the benefit RAID levels provide?

• A. Lower latency in local networks.
• B. Automatic data deletion.
• C. Increased software flexibility.
• D. Redundancy or speed improvements.

Answer: (D)

RAID combines multiple disks to improve storage reliability and performance. By duplicating data on separate disks (redundancy) or spreading data across disks to increase throughput (speed), RAID levels deliver those benefits. That makes the statement describing redundancy or speed improvements the best fit. RAID isn’t about lowering network latency, automatic data deletion, or increasing software flexibility—the benefits come from how data is stored across several drives to guard against failures and boost performance. For example, mirroring duplicates data on two drives for fault tolerance, while striping distributes data across drives to boost read/write throughput.