"As a sales professional, I do thrive in a collaborative team environment. Knowing that I can draw on the knowledge and help of my team is very motivating to me. From the research I have done on your company, I understand that you have a large focus on positive teamwork. That is very appealing to me."
When you answer this question, be sure to draw on the company research that you have performed prior to your interview. What type of culture do they offer? Is their brand or environment something that excites you? Talk a little bit about the types of work environments you have been exposed to, what you prefer, and how their culture works with your preferences.