|A) a major Air Force base in Iraq||B) the main oil terminal in Iran|
|C) a pilgrim centre for Muslims and Christians as well||D) an archaeological site throwing new light on the civilisation that flourished in Arabia before the advent of Aryans into india|
Answer: B) the main oil terminal in Iran
Iran is an important oil-producing region in the Middle East. Abadan on the Abadan island has one of the largest refineries in the world.