Fill in the blank with the most appropriate word.
He _____ milk in his coffee.
A verb is used to express an occurrence, action, or state. It is the grammatical centre of the predicate in a sentence.
An auxiliary verb is a verb which gives is used in the formation of tenses, moods, tones, etc.
Option A is correct as the sentence is about a habit (never) and the main verb is missing. Therefore, has is used as an ordinary verb.
The other options are wrong as no other tense other than simple present can be used.
The correct answer is A) never has