Final answer:
The examples provided, such as hard drives, CDs/DVDs, and flash drives, are all types of Storage Hardware used for data retention and access.
Step-by-step explanation:
Hard drive, CDs/DVDs, flash drive are all examples of Storage Hardware. These devices are meant for storing digital data that a computer or digital device can use. While they vary in terms of speed, capacity, size, and portability, their primary function is to retain information for us to access at a later time. Hard drives, for example, use magnetic fields to encode data and are often used as the main storage device in computers. CDs and DVDs employ optical technology to read and write data, while flash drives, which are also known as thumb drives or USB drives, use flash memory to store data in a compact, portable form.