The correct option is E The damage was primarily caused by a surge of water
The earthquake had affected the water input through the Mediterranean, which surged into the inland and caused havoc. Heavy amounts of water rushed into the towns and cities causing destruction all over. Thus, option E, primary damage caused by water surge, is the correct answer. The statements of options A, B, C, and D are not substantiated by the text and, thus, are incorrect in this context.