Which of the following is an example of storage media?

Storage media refers to the physical devices used to store digital data. Disk, as an example of storage media, serves the primary function of holding data and files persistently, allowing for the retrieval and use of that information at a later time. Disks can come in various forms, including hard drives, solid-state drives, and optical discs, each designed to retain data even when the power is turned off.

In contrast, RAM (Random Access Memory) is a type of temporary volatile memory that only retains information while the computer is powered on, making it unsuitable as a storage medium for long-term data access. The CPU (Central Processing Unit) is the main processing unit of a computer, responsible for executing instructions but does not store data. The motherboard serves as the main circuit board that connects all components of a computer but does not serve as a storage medium itself. Thus, the use of "disk" highlights the correct identification of an essential component in the structure of computer storage solutions.