Which of the following describes a frayed cord?

A frayed cord refers to an electrical cord that has damaged insulation or exposed wires due to wear and tear. This damage poses a significant risk for electric shock since the exposed wires can come into contact with people or surfaces, potentially leading to serious injuries or accidents. It's critical to identify and address such hazards to ensure safety when using electrical devices.

The other options do not accurately capture the definition of a frayed cord. A worn-out charging cable might show signs of damage, but it doesn't necessarily imply exposed wires that create an electric shock risk. A cord being too short for use relates more to convenience than safety, and a cord with multiple attachments concerns functionality rather than the integrity of the cord itself. Thus, the correct answer highlights the crucial safety aspect associated with a frayed cord.