Ever and never (Doesn't Elaine ever take a vacation?)

2). Doesn’t Elaine ever take a vacation?

a)She doesn’t take one last year.
b)She does, but she also works hard. – CORRECT
c)No, Elaine does never take vacation.

Why is c) not correct?

.
We do not use ‘do’ in an affirmative statement except for emphatic denial, which is not appropriate here.
.

Hi,
Since “Never” is used in positive sentences with a negative sense,helping verbs(do/does) are not needed.
Therefore,“No,Elaine never takes a vacation.” is correct.
Hope this helps,
Morteza

a) Is also incorrect.

She didn’t take one last year.