The authors note that a leader must recognize:

• A. No one is more important than the team; a single person is always key
• B. Individual success is more important than team success
• C. A leader must always act on impulse
• D. No single person is more important than the team; a person's greatest strength can also be his biggest weakness; the leader must maintain discipline in making decisions

Answer: (D)

Leading well means valuing the team over any one person while recognizing that an individual’s strengths can become weaknesses if not managed, and decisions should be made with discipline rather than impulsively. The best choice captures this balance by saying no single person is more important than the team, and it adds that a person’s greatest strength can also be his biggest weakness; the leader must maintain discipline in making decisions. In practice, a good leader relies on the team, distributes responsibility, and uses input from others, but still makes deliberate, thoughtful choices rather than acting on impulse. The other options miss this balance: one overemphasizes any one person’s key role, another values individual success over team success, and another encourages impulsive action, which undermines steady, principled leadership.