(A) ** 2009
(B) 2005
(C) 2006
(D) 2004
EXPLANATIONS BELOW
Concept note-1: -Barack Obama served as the 44th President of the United States from 2009 to 2017. At his inauguration to the presidency in 2009, Barack Obama was the first African-American to serve as President of the United States.
Concept note-2: -Barack Obama served as the 44th President of the United States.
Concept note-3: -Barack Obama’s tenure as the 44th president of the United States began with his first inauguration on January 20, 2009, and ended on January 20, 2017. A Democrat from Illinois, Obama took office following a decisive victory over Republican nominee John McCain in the 2008 presidential election.
Concept note-4: -January 20 – Barack Obama’s presidency begins with his inauguration at the United States Capitol in Washington, D.C.; the oath of office is administered by Chief Justice John Roberts.