Answer:
Marcus needs to manage his emotions towards Amy's actions
Explanation:
Based on the information provided within the question it can be said that in order to be an effective team member Marcus needs to manage his emotions towards Amy's actions. When working in a team you need to be able to communicate effectively and work out any problem's that may arise in a calm and collected manner. Anger should not be present in a work environment as it can quickly escalate into chaos and break the flow and efficiency within a group.