(A) Five years
(B) ** Two years
(C) Six years
(D) Ten years
EXPLANATIONS BELOW
Concept note-1: -Following high school, Obama moved to Los Angeles in 1979, where he studied at Occidental College for two years.
Concept note-2: -Obama signed many landmark bills into law during his first two years in office. The main reforms include: the Affordable Care Act, sometimes referred to as “the ACA” or “Obamacare", the Dodd–Frank Wall Street Reform and Consumer Protection Act, and the Don’t Ask, Don’t Tell Repeal Act of 2010.
Concept note-3: -President Barack Obama attended Occidental for two years prior to transferring to Columbia University.