Final answer:
According to Tuckman's group development research, the phase in which members begin to resolve conflicts and work together as a cohesive team is the norming stage.
Step-by-step explanation:
According to Tuckman's group development research, the phase in which members begin to resolve conflicts and work together as a cohesive team is called the norming stage. This is the third stage in Tuckman's model, following the forming and storming stages. During the norming stage, group members start to establish their roles, develop trust, and collaborate effectively to achieve the team's goals. In this stage, conflicts are resolved, and the focus shifts from individual differences to a shared commitment.