Modal verbs are different verbs that behave irregularly in English. They give additional information about the function of the main verb. Match the columns relating modal verb to its function:

First column: Modal Verbs

1- Must
2- Can
3- May
4- Ought to
5- Could

Second column: Communicative Functions

( ) Probability
( ) Polite permission
( ) Ability
( ) Obligation
( ) Advice

Choose the alternative that presents the correct match: