It's always wise to have questions prepared for your interviewer. Review the company website and other online resources to ensure your questions are not mundane or redundant. The more research you perform on them, the more pertinent questions you'll be able to generate. The last thing an interviewer wants to hear is a list of questions you could have answered yourself by watching a video on their company site.
This question will help them assess your genuine interest in working for them and determine whether you are the type of person to ask questions when training for a new job. The more questions you ask, the more enhanced your communications skills will seem, and the more likely you will be self-guided and successful at your job.
You are interviewing the company as much as they are interviewing you. They've provided opportunities to share your accomplishments and advertise your merits. This question is your opportunity to allow them to propose their pitch, promote their merits and what they offer, and convince you this is a great opportunity.