問題：In Belbin's model of team roles, which of the following is most important for a well-functioning team?
　　A. Nine members, so that all roles are filled
　　B. A mix and balance of team roles
　　C. As few members as possible
　　D. A focus on functional/task roles, not process roles
　　答案：The correct answer is: A mix and balance of team roles
　　解析：Rationale: This should be straightforward if you have understood the Belbin model. A healthy team has a mix and balance of roles.
　　However, members can adopt more than one role, or switch roles as required: there need not be nine members with fixed roles. Belbin argues that it is the process roles (how people *, contribute and interact with others), rather than the functional roles (technical skills and operational knowledge) that impact on team functioning - although functional roles are still important for getting the task done!