Which PC component is known as primary storage and loses its content when power is removed?

The correct choice identifies RAM, or Random Access Memory, as the primary storage that loses its content when power is removed. RAM is used by the computer to store data temporarily while a computer is active. This allows for quick read and write access to data that a CPU needs for processing tasks.

When power is turned off, the information stored in RAM is lost because it is volatile memory; it relies on electrical power to maintain the information. In contrast, other storage components like a hard drive are non-volatile, meaning they retain data even when powered off.

This characteristic of volatility is crucial for understanding how computers manage memory and data during operation. Users typically load programs and data into RAM from slower storage devices to improve performance, while permanent storage devices are used for long-term data retention.