Question

Airline companies pay nearly twenty-five billion dollars for their right of fly over countries that aren't their parent company.

• A. their right to fly
• B. their right in flying
• C. their right to flying
• D. there right to flight
• E. No correction required.

Answer 1

The correct option is A their right to fly

Use to + $V_1$' to show purpose or intent of something, So. 'their right to fly' is the suitable option.
Eg: Team members have shown their will to win.