Obviously, do not answer with the words "money" in it or anything like that. Answer it in a fashion that would make you stand out from the crowd and make you different. Talk about something specific about that company if you can because that will likely get you bonus points. Know as much as you can about the company for this question. Like how your skills will suit the mission and vision of the company and how you think you can improve the company with what you see with them. I think Matrikon likes team players, so make sure it's a company oriented answer, even though it's about you.
Careful how you answer this one, and make sure to spin it in a positive way. Not in a way to disguise it as a positive, though. I suggest to take a true weakness, but then emphasize what you've done to overcome it, like courses, or things you have done to try to change this behavior.