When typing, you should press the Enter key only once at the:

This word describes a function that is updated each time the workbook is opened

A) Unstable B) Volatile C) Changeable

The operating system does which one of the following?

A) Coordinates the interaction between the hardware and software B) Controls disk and file management activities C) Coordinates the interaction between a user and the computer D) All these answers are functions performed by the operating system.