This question offers an opportunity to showcase what aspects of professional methodology have benefited you in the past. How you answer will help them assess how well you'll fit into their team and work environment and whether you'll be able to adapt to their way of doing things. Familiarize yourself with the basics of this position. Describe your system approach, as well as your ability to adapt. If there are aspects of your work style that coworkers have adopted, focus on that as well. Highlight your strengths, your flexibility, your ability to hold yourself accountable and learn from your mistakes, and that you are easy to work with. As they say on their website, "Do The Right Thing.
Deal directly with problems. Value everyone equally. Own up to your mistakes and learn from them."

This question assesses your integrity by evaluating how honestly you present your answers, so answer sincerely. Some non-verbal cues the assessment vendor will use to evaluate your honesty are stroking your chin and covering your mouth or your eyes, gaze avoidance, the direction of your eyes, excessive fidgeting such as restless foot and leg movements, frequent body posture changes, and grooming behaviors such as playing with hair or pressing your fingers to lips.