The correct option is B Ever
The sentence needs to add a sense of time to the action given by its verb. So, it needs an adverb of time. An adverb of time is a word that describes when, for how long, or how often a certain action happened. Option B is the correct answer as ‘ever,’ as an adverb of time adds the sense of time to the sentence. Option A cannot be used as ‘never’ cannot be used with ‘not’. Options C and D cannot be used as they would render the sentence meaningless.