a. It basically represents its meandering stage whereby Ganga river as it enters a flat plain. where more sediment is dropped , it twist and turn and form bends.
b. This is primarily because of the relief feature and the distance between Ambala and Sunderbans which is about 1800 kilometres. The slope indeed here is very gentle.
c. River Ganga in its course forms Dendritic drainage Pattern​. It also forms deep valleys, gorges, ox bow lakes and other depositional features in its course,