When Sir Walter Raleigh left, they disappeared.
Sir Walter Raleigh visited the settlement again after the end of the war but found a completely deserted area. There were no signs of struggle or violence and no message has been left behind. 90 Men, 17 women, and 11 children had just left the place without a trace. The bad weather prevented any attempt at further exploration.
No other attempts were ever made to find the missing people and the 'Lost Colony' remains a mystery to this day.
There will be a trial... I think
The answer is Letter C. Iron curtain is the political separation of Western and Eastern Europe. It started from the end of World War II in 1945 until the last part of Cold War in 1991. Countries who are members of the Warsaw pact are located at the east side of the Iron Curtain while NATO members are on the west side.