Which statement about HDDs is true?

• A. They offer high capacity, reliable, and long-lasting storage.
• B. They always have the fastest read write speeds.
• C. They have no moving parts.
• D. They are immune to physical shocks.

Answer: (A)

Hard disk drives deliver large amounts of storage at a relatively low cost per gigabyte. They achieve this by using spinning platters with magnetic read/write heads, which makes bulk storage affordable and reliable for long-term use, such as backups and archives. However, their mechanical nature means they’re not the fastest option—solid-state drives have faster data access since they have no moving parts and no seek times to contend with. HDDs also do have moving parts, so they’re not immune to physical shocks like drops or vibrations. So the statement describing HDDs as offering high capacity, reliable, and long-lasting storage captures the most accurate overall picture, while the other points misstate speed, the presence of moving parts, or shock resistance.