With which country China launched a joint initiative to protect the oceans, highlighting such cooperation as proof that the two nations can work together despite stubborn disagreements?

a. Japan

b. Russia

c. Vietnam

d. United States

ANSWER: United States

Explanation:

US Secretary of State John Kerry and State Councillor Yang Jeichi chaired the first meeting of a new oceans working 

group in Washington on 24th June’15 on the third and final day of key annual talks between Beijing and Washington.