What are the 4 main roles in a project team and how do they contribute to the success of the project?

The four main roles in a project team are project manager, team members, stakeholders, and sponsors. The project manager oversees the project, sets goals, and coordinates team efforts. Team members execute tasks and contribute their expertise. Stakeholders provide input and feedback throughout the project. Sponsors provide resources and support. Each role plays a crucial part in ensuring the project's success by working together towards a common goal, communicating effectively, and addressing challenges as they arise.