Choose the appropriate Modal to complete the given sentence: “He ____…

The correct answer is Option (3) → dare

Complete sentence: He dare not ask for a raise, for fear of losing his job. He is afraid of losing his job, so he does not have the courage to ask.

Option	Meaning and use	Example
(1) need	Need not means it is not necessary. "He need not ask ..., for fear of losing his job" does not make sense, because fear is a reason for not having the courage, not for its being unnecessary.	You need not come early tomorrow.
(2) ought	Ought is always followed by to: "ought not to ask". It also gives advice, not fear.	You ought to respect your elders.
(3) dare (answer)	Dare means to have the courage to do something. In negatives it works like a modal: dare not + base form of the verb, with no "to".	She dare not tell her father about the accident.
(4) used	Used needs to ("used not to ask") and speaks of a past habit, not of fear in the present.	We used to play cricket every evening.