Which of the following is NOT one of the four basic types of keys on a computer keyboard?

Typing keys
Function keys
Scroll lock keys
Control keys

Scroll lock keys

Rationale: Scroll lock keys are not one of the four basic types of keys on a computer keyboard. The four basic types are: typing keys (also known as alphanumeric or typewriter keys), function keys (also known as special keys), control keys (also known as cursor control keys), and the numeric keypad.