Because of large reserves that center around the Persian Gulf, the Middle East often produces as much as two-thirds of the world’s supply of __________.
A. water
B. cattle
C. coal
D. petroleum

Answer :

simion
your answer is D - petroleum.

the area around the Persian Gulf is desert so can't be the water, coal or cattle. But here it can be found large underground reserves  of Petroleum. 

Answer:

d

Explanation:

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