Read the following paragraph.

Students attending schools with mandatory uniform policies experience less pressure than do students who must choose their wardrobes. This is because school uniforms allow students and their parents to save money and time. The financial investment in uniforms at the beginning of the school year is far more economical than the purchase of an entire wardrobe of designer clothes and trendy styles. Students who do not have to deliberate what to wear each morning are able to invest their time in more productive ways, such as studying for tests or finishing homework. Uniforms may stifle students’ self-expression, but there are many other ways to reveal one’s individuality at school.

Which of the following statements best supports the author’s claim?
School uniforms, which are less baggy than many modern styles, make it more difficult for students to hide contraband items.
School uniforms make it easier for faculty and staff members to identify students as members of the student body.
Students are more focused on classroom instruction and less interested in what their peers are wearing.
Parents are supportive of public schools adopting school uniforms for several reasons; the most common being affordability.