If you are under 15, you ______ get your parents’ permission.
don’t have to
Correct answer: A
Knowledge: modal verb
A. have to do sth: to do something
B. must do sth: to do something (meaning that the person should do something because it is desirable, beneficial, etc.)
C. mustn’t do sth: not allowed to do anything
D. don’t have to do sth: don’t have to do anything
=> If you are under 15, you have to get your parents’ permission.
(If you’re under 15, you must ask your parents for permission.)