Select the most appropriate option that can substitute the underlined segment in the given sentence.
The wizard, while performing an item, accidentally set his own hat on fire and prompted the fire alarm to go on.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. the fire alarm to go off.
In this context, "the fire alarm to go off" is the correct phrase because it specifically means for an alarm to start ringing or to be triggered.
It’s a standard expression used to describe the activation of alarms and other signalling devices.