(A) 64th (X)
(B) 65th (X)
(C) 68th (X)
(D) 70th (✔)
Answer : Japan marked the 70th anniversary of the end of the Battle of Okinawa which killed a quarter of its population. More than 100,000 Okinawans and 80,000 Japanese troops died in the 82- day battle for the strategically placed island chain.