Functions of Formation in Railway track are?

A) to hold the track in proper position and provide a correct gauge with the help of fitting and fastenings and transfer train load to the ballast below B) to holds the Sleepers in position and provide a uniform level surface, also provide drainage to the track and transfer the train load to a larger area C) it is the base of the track, it give level surface where the ballast rests. the total load of track is taken by this component of railways track D) to provide a grip between rail and sleepers