Q. He has puzzled . . . . . . . . the figures for hours without being able to make head or tail of them.
✅ Correct Answer: (B)
over
Explanation: 'Puzzle over' means 'to think or worry for a long time about (something)'. Hence it makes the sentence meaningful.
Explanation by: Team MCQ Buddy
'Puzzle over' means 'to think or worry for a long time about (something)'. Hence it makes the sentence meaningful.