WAEC Computer Studies 2017 Paper

Concept:Modifier keys are special keys pressed together with another key to perform shortcuts or commands.Explanation:Modifier keys do not type characters on their own.They change the function of other keys when pressed in combination.Common modifier keys include $SHIFT$, $CTRL$ and $ALT$.$DEL$ and $ESC$ are not modifier keys; they perform their own specific actions.$CAPS$ $LOCK$ is a toggle key, not a modifier key.Therefore, the correct group of modifier keys from the options is $SHIFT$, $CTRL$ and $ALT$.Answer:C. SHIFT, CTRL and ALT keys.