(A) ** 8 years
(B) 9 years
(C) 4 years
(D) 5 years
EXPLANATIONS BELOW
Concept note-1: -Barack Hussein Obama II (/bəˈrɑːk huːˈseɪn oʊˈbɑːmə/ ( listen) bə-RAHK hoo-SAYN oh-BAH-mə; born August 4, 1961) is an American retired politician who served as the 44th president of the United States from 2009 to 2017.
Concept note-2: -The 2012 United States presidential election was the 57th quadrennial presidential election, held on Tuesday, November 6, 2012. Incumbent Democratic President Barack Obama and his running mate, incumbent Vice President Joe Biden, were re-elected to a second term.
Concept note-3: -On November 4, 2008, Barack Obama became the first African American to be elected President of the United States, sparking many celebrations in the United States and around the world. He gained almost 53% of the popular vote and 365 electoral votes.