The answer of this questions is D
Difference of government philosophy and differing sects of Islam.
For the Iranian Revolution, the question of a secular versus religious government was of concern. The government being overthrown was more secular and Western influence was there. The revolutionaries were fundamentalists who wanted religion to return to the government.
In the Iraq-Iran War, it was a difference of religious sides within Islam. Iraq is more Sunni and Iran is more Shi'a. These sects have a long history of conflict and the difference in religion and politics influenced the war. Also the question of western influence in the area was of concern.
The correct answer is the Marshall Plan.
The Marshall Plan, put into law in June of 1948, resulted in the United States giving roughly $13 billion in economic aid to countries in Western Europe. This included countries such as France, Great Britain, Italy, Greece, Turkey, and West Germany. The goal was to help these countries recover and to ensure that none of these nations fell under the control of the Soviet Union. This was one of the US's governments first step towards stopping the spread of communism in Europe. It would not be their last.
The answer should be War Bonds.
