Correct Answer: (c) Foreign Minister, Pranab Mukherjee
Solution:U.S. president, George W. Bush, signed the legislation on the Indo-US nuclear deal, approved by the U.S. Congress, into law, now called the United States-India Nuclear Cooperation Approval and Non-proliferation Enhancement Act, on October 8, 2008. The agreement was signed by then Indian External Affairs Minister Pranab Mukherjee and his counterpart then Secretary of State Condoleezza Rice, on October 10.