Choose the appropriate compound adjective to complete the sentence:
My sister chose the _________ room.
A compound adjective is formed when two or more adjectives are joined together to modify the same noun. Further, only some compound adjectives can be used to describe a person or thing, based on the quality they describe. The given sentence speaks about a ‘room’, thus ‘brightly-lit’ is the apt answer. It means full of light. Thus option C is correct. On the other hand the other options cannot be used because they are generally not used to describe a room. ‘Three-week’ is used to describe a time period which is unsuitable. While ‘mouth-watering’ means appetising, thus it is used for food and cannot be used for a room. Similarly ‘open-minded’ is used for a person who is open to new to new ideas and concepts. Thus options A, B and D are incorrect.