Read the Paragraph Below and Answer the Questions That Follow

Read the paragraph below and answer the questions that follow.
(1) America's public schools should adopt the principles of Harlem, New York's Promise Academy, three charter schools established in 2004 to revitalize an impoverished urban area through better education. (2) First, public schools should lengthen the school day. (3) In the Promise Academy schools, the school day begins at 8:00 a.m. and does not end until 4:00 p.m.; furthermore, teachers assign homework in every subject every night. (4) Putting this kind of emphasis on academic studies in public schools would result in graduates who are better prepared for the challenges of higher education and the workforce. (5) Second, public schools should offer an after-school program like the one at the Promise Academy. (6) In that program, which lasts until 6:00 p.m. for elementary school children and 7:30 p.m. for middle and high school students, young people can get academic help or take additional classes to learn to speak a foreign language, play a musical instrument, or explore a new hobby such as photography or chess. (7) If offered a similar program, public school children would be more likely to spend their time in safe, productive activities and less likely to get into trouble. (8) Finally, public schools should replicate what the Promise Academy calls its "culture of achievement and intellectual growth." (9) By creating this type of culture, public schools would increase their student success rates.
How many arguments support the topic sentence?

A) two
B) three
C) four