(A) ** 44
(B) 44th President
(C) Fisrt president
(D) 25
EXPLANATIONS BELOW
Concept note-1: -Barack Obama served as the 44th President of the United States. His story is the American story-values from the heartland, a middle-class upbringing in a strong family, hard work and education as the means of getting ahead, and the conviction that a life so blessed should be lived in service to others.
Concept note-2: -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.