Answer:
Answer is Option 2: U.S. leaders worked to improve relations with foreign countries to protect its access to natural resources.
Explanation:
United States has always wanted to maintained its relations with foreign ministers to protect its natural resources. This is why U.S concerned regarding Middle East in 1970s. It is believed to be foreign policy of U.S. to dominate Middle East. Oil has always been abundant in Middle East so U.S. has always tried to keep access to such natural resources.
Other options like U.S worked to bring peace and encouraged the creation of OPEC as per options 1 and 3 are incorrect. Option 4 is also incorrect.