Where does a computer store data that it needs quickly while an application is in use?

The correct choice is RAM, which stands for Random Access Memory. RAM is a type of volatile memory that allows for the fast storage and retrieval of data that a computer is currently working with. When an application is in use, it loads its necessary data and instructions into RAM because accessing data from RAM is significantly faster than accessing it from other storage types such as a hard drive.

This high-speed access is crucial for smooth performance, as it enables the processor to quickly read and write data needed for running applications, processing tasks, and managing active operations. If data were stored in the hard drive, which is a non-volatile storage solution, the computer would experience noticeable delays while it retrieves data, leading to slower application performance.

Unlike ROM (Read-Only Memory), which is used for permanent storage of firmware and does not change, and cloud storage, which relies on internet connectivity and is generally slower when needing immediate access, RAM is specifically designed for speed and efficiency in active applications.