The statement "You need your manager, and your manager needs you" best demonstrates the idea of mutual dependence between a manager and an employee, as both parties rely on each other to achieve their goals and be successful. A manager relies on their employees to carry out tasks, meet deadlines, and contribute to the success of the organization, while employees rely on their managers for guidance, support, and opportunities for growth and development. This mutual dependence creates a relationship of interdependence, where both parties work together to achieve shared objectives and contribute to the overall success of the organization. The other options do not demonstrate the idea of mutual dependence, as they imply a lack of cooperation or a preference for working independently rather than as part of a team.