Final answer:
Teams are still necessary in organizations as they bring together diverse skills and expertise for better problem-solving. However, the team concept has been oversold and not all tasks require a team-based approach.
Step-by-step explanation:
The question is discussing the concept of teams and whether they are still needed in organizations. According to Constance Noonan Hadley and Mark Mortensen, who are pro-team, they believe that while the team concept has been oversold, teams are still necessary. They argue that teams bring together diverse skills, experience, and expertise, which can lead to innovation and better problem-solving. However, they also acknowledge that teams are not always the answer and that not all tasks require a team-based approach.