(A) ** the ideas and customs of groups of people
(B) the regions on a map where you live
(C) different types of classical music
(E) None
EXPLANATIONS BELOW
Concept note-1: -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-2: -A member of the Democratic Party, he was the first African-American president of the United States. Obama previously served as a U.S. senator from Illinois from 2005 to 2008 and as an Illinois state senator from 1997 to 2004, and previously worked as a civil rights lawyer before entering politics.
Concept note-3: -When Barack Obama was elected president in 2008, he became the first African American to hold the office.