Some of the largest reserves of crude oil are in the Middle East. Saudi Arabia, Iran, Iraq, and Kuwait produce much of the world's oil. Together, these countries control more than 50 percent of the world's crude oil reserves. Turkey is not a major oil producer. It does, however, have a greater variety of mineral resources than any other Middle Eastern nation, producing limited amounts of coal, iron, ore, chrome, copper, borate, and sulfur. Much of this region is poor in mineral resources but greatly depend on the population and export of crude oil. Based on the description of the environment above, which of the following headlines describes a way people in the region have modified transportation systems in the area?

a. "Middle Eastern Governments Fund Road Projects Using Oil Profits"
b. "The Taliban Takes Over Oil Reserves in North Africa"
c. "Iraq is in Short Supply of Oil"
d. "The Mountains of Northern Morocco are Filled with Iron Ore"