(A) 2012
(B) ** 2008
(C) 2005
(D) 2010
EXPLANATIONS BELOW
Concept note-1: -In 2008, after a close primary campaign against Hillary Clinton, he was nominated by the Democratic Party for president and chose Joe Biden as his running mate. Obama was elected over Republican nominee John McCain in the presidential election and was inaugurated on January 20, 2009.
Concept note-2: -The 2008 United States elections were held on November 4. Democratic Senator Barack Obama of Illinois won the presidential election, by defeating his challenger, Senator John McCain, and the Democrats bolstered their majority in both Houses of Congress. 2008 Presidential election results map.
Concept note-3: -When Barack Obama was elected president in 2008, he became the first African American to hold the office.
Concept note-4: -Obama won a decisive victory over McCain, winning the Electoral College and the popular vote by a sizable margin, including states that had not voted for the Democratic presidential candidate since 1976 (North Carolina) and 1964 (Indiana, Virginia, and Nebraska’s 2nd congressional district).