(A) ** Harvard
(B) Yale
(C) Princeton
(D) Columbia
EXPLANATIONS BELOW
Concept note-1: -As a young adult, Obama moved to the contiguous United States, where he was educated at Occidental College, Columbia University, and Harvard Law School.
Concept note-2: -Harvard University has produced the most Presidents when it comes to their undergraduate school with 8! That includes John Adams, John Quincy Adams, Theodore Roosevelt, Rutherford B. Hayes, Franklin D. Roosevelt, John F.
Concept note-3: -He left to attend graduate school on a scholarship at Harvard University, where he earned an M.A. in economics.