Q. The Neighbours complained . . . . . . . . how loud our music was.
✅ Correct Answer: (D)
about
Explanation: 'Complained about' means 'to say that you are annoyed, unhappy, or not satisfied about someone or something'. Hence it makes the sentence meaningful.
Explanation by: Team MCQ Buddy
'Complained about' means 'to say that you are annoyed, unhappy, or not satisfied about someone or something'. Hence it makes the sentence meaningful.