Mary has been appointed to lead a new product development project. Her project team has been selected and has been together for about one week. Although Mary is frustrated by the arguments and lack of cooperation among the team members. She is not concerned as she has experience with the stages that a high performing team usually goes through, Which team development stage best describes this situation? Mary被指派领导一个新产品开发项目。项目团队成员的筛选已经完成，并且项目团队已经一起工作了一周时间。尽管Mary因为团队成员之间的相互争吵与缺乏合作而懊恼。她却并不因此而挂怀。因为她经历了绩效团队走过的所有阶段。以下哪一个团队发展阶段最好地描述了当前的状况？