challenge: What is the significance of April 25, 1915, in the history of the Gallipoli Peninsula?
  
  A. It marks the end of the Gallipoli Campaign in World War One
  B. It commemorates the start of the Ottoman Empire
  C. It is the day the Allied forces withdrew from the peninsula
  D. It is known as Anzac Day, commemorating the lives lost by Australians and New Zealanders
  Answer: 