The correct answer is: C. Home signal.
A neutral zone is a section of track between a starter and a home signal. It is used to allow trains to stop and wait for the home signal to clear before proceeding. The neutral zone is typically about 100 meters long, but it can vary depending on the specific layout of the station.
A starter is a device that is used to control the movement of trains into and out of a station. It is typically located at the entrance to the station, and it is used to prevent trains from entering the station if it is not safe to do so.
A home signal is a signal that is located at the entrance to a station. It is used to indicate to trains whether or not it is safe to enter the station. The home signal is typically red when it is not safe to enter the station, and it is green when it is safe to enter the station.
The other options are incorrect because they are not located between a starter and a home signal.