This was a difficult one for me as I was only planning on working there for a little while, but they are marketing the job as one with quick advancement so show them that your driven and you'll be fine.
I explained that I would lay down expectations for what was required for someone to be successful and to progress and as the top performer the responsibility that the person would have to be a good example. And get their confirmation that they understand and that this would not be a recurring problem.
I had really done my homework on the brand and was aware of a lot of the projects they had ongoing, I think this was a sensible move as it showed I was interested enough to bother! I have a personal interest in sustainability anyway so was able to demonstrate that too. I always try to be myself in interviews so that I come across as a genuine person and I think that is the best advice I could give. After my interview, my boss told me that even though there were people who were technically more qualified than I was, my enthusiasm and attitude landed me the position as skills and qualifications are something I can acquire on an ongoing basis. Plenty of training is available anyway!