Which sentence contains the bare-infinitive error in the permission-modal contrast?
May I to consult the atlas in the reading room?✓Correct answer
Could I photograph the pottery without using a flash?
You can collect the costume from wardrobe after the performance.
The editor said we may quote two lines from the private letter.
Explanation
The reading-room request is malformed because may cannot be followed by to before the main verb. The remaining sentences use a bare verb after can, may or could and express either a request or a genuine grant.