Select the most appropriate option to fill in the blank.
Turn the lights ______, I want to go to sleep.

Correct option is D

The correct option to fill in the blank "Turn the lights ____, I want to go to sleep" is (d) "off." This verb fits the context of preparing for sleep by extinguishing the lights. "Turn off" is a phrasal verb used to indicate the action of deactivating an electrical device or light source. Example: Please turn off the lights before leaving the room.
· Meanings for the other options:
· Option (a) Down: Typically used to reduce something in intensity or amount. In the context of light or sound, "turn down" would mean to decrease the brightness or volume.
· Example: Could you turn the music down a bit? It’s quite loud.
· Option (b) On: Used to indicate that something is in a state of operation or to activate something.
· Example: She came into the room and turned the TV on.
· Option (c) Up: Often used to increase something in intensity or amount. For lights or sound, "turn up" would mean to make it brighter or louder.
· Example: It’s getting dark; please turn the lights up.