When you're asked what interests you about the position you are interviewing for, the best way to respond is to describe the qualifications listed in the job posting, then connect them to your skills and experience. That way, the employer will see that you know about the job you're interviewing for (not everyone does) and that you have the qualifications necessary to do the job.

For example, if you were interviewing for a Human Resources Manager job where you would be responsible for recruiting, orientation and training, you will want to discuss how you were responsible for these functions in your past positions, and why you are interested in continuing to develop your expertise in Human Resources management.