Answer:
Option: D. It has been used as a source of political power.
Step-by-step explanation:
Oil in the Middle East had made the region strategically significant for the world's powers since the 20th century. Oil had made the region to prosper and become political power because of the high consumption of the oil in the World. The Middle East is the highest exporter of crude oil around the World. With enormous oil fields in the region played a significant role in staying them as a political power in world politics and as well as in the economic market.