Each TOP must provide a copy of the voltage schedule to its ______________ and ______________ operators within ____________ days of request.

The correct choice indicates that each Transmission Operator (TOP) is required to provide a copy of the voltage schedule to both its Reliability Coordinator and Adjacent Balancing Authority (BA) within 30 days of a request. This adherence to sharing crucial operational information supports the overall reliability and efficiency of the electric power system.

The requirement for Transmission Operators to communicate effectively with their Reliability Coordinator ensures that there is comprehensive oversight and coordination regarding transmission operations. This is essential for maintaining system stability and managing electricity flow across different regions, as variations in voltage can significantly impact the reliability of the grid.

Additionally, providing this information to Adjacent Balancing Authorities is critical because it allows for better coordination among neighboring entities, helping to prevent disruptions caused by mismanagement of voltage levels. The 30-day timeline strikes a balance between ensuring timely access to important operational data and allowing for necessary administrative and technical preparations to compile and deliver the information.

In essence, this requirement is part of the broader framework established to enhance operational reliability and transparency in the electric power sector, emphasizing the importance of communication and collaboration among different operators within the grid.