⟩ What you should not say while answering this question, why do you want to leave your current job?
Bad answer:
I can not stand my boss or the work I am doing.
Again, stay away from badmouthing your job or employer. Focus on the positive.
Good answer:
I have learned a lot from my current role, but now I am looking for a new challenge, to broaden my horizons and to gain new skill-sets, all of which, I see the potential for in this job.