Which requirements are included in the demand to "lead" effectively?

The requirement to "lead" effectively encompasses several key components, which are embodied in the option of communicating, leading by example, and extending influence beyond the chain of command. Effective leadership is fundamentally about interaction and communication; a leader must clearly convey expectations and provide feedback to help team members understand their roles and responsibilities.

Leading by example is crucial because subordinates often look to their leaders for guidance on how to behave and perform. When leaders demonstrate the values, work ethic, and behaviors they wish to see in their team, it fosters a culture of mutual respect and motivation.

Additionally, extending influence beyond the chain of command allows leaders to build relationships and networks that encourage collaboration and support. This approach broadens the leader's impact not just within their immediate team, but throughout the organization, promoting a more cohesive and effective environment.

The other options lack the comprehensive attributes necessary for effective leadership. For example, the notion of subordinates' personal sacrifices may not align with the expectation of fostering a supportive and healthy work environment. Strict enforcement of hierarchy can stifle creativity and open communication, which are essential for effective leadership. Lastly, setting ultimatums and deadlines can lead to a culture of fear or resentment rather than one of encouragement and growth. Therefore, the