The interviewer wants to know that you can be diplomatic in the workplace, even when you may not agree with your leader.
Show the interviewer that it is possible for you to be a good team member, yet disagree with the leader from time to time. Explain that you believe everyone is entitled to their own professional opinion, yet capable of maintaining respect for each other at the same time.
Show that even if you disagree with the final decision they make, you support the direction the team is heading.
"I think that it is possible to be a great team member, even when disagreeing with the leader. It's all in how you maintain respect for each other despite the difference in opinion."
"Yes, I think it is possible! What makes a great team member is not that they agree with everything but the level of respect and positive thought that goes into the person's communication style. It's okay to disagree; however, you have to communicate your thoughts professionally."