Which statement is true about base stations in a cellular network?

All the provided statements accurately describe various aspects of base stations in a cellular network, making the comprehensive answer the most valid choice.

Base stations are essential components that ensure seamless mobile communication. They provide coverage over the area of a cell, which means they act as the hub for mobile devices, facilitating their connection to the network within a specific geographical area. This function is vital for providing service to users as they move through the cell.

Furthermore, base stations use different frequencies in adjacent sectors to minimize interference. This practice is essential for maximizing the efficiency of frequency use and maintaining the quality of connections. By assigning different frequencies, adjacent base stations can operate without causing disruption to one another, which is crucial for maintaining effective communication.

Additionally, adjacent base stations play a vital role in the handover process of mobile conversations. As a user moves from one cell to another, the call or data session can be handed over smoothly from one base station to the next. This capability is crucial for maintaining the continuity of service, ensuring that communication is not dropped when a mobile device transitions between coverage areas.

Given these points, it is clear that each statement highlights a different truth about how base stations function within a cellular network, affirming that all of them are correct.