In today's high schools, students spend excessive time focusing on trivial and distracting matters such as fashion and often dress inappropriately on school grounds; rather than writing yet another detailed dress policy, making school uniforms mandatory is proposed to build community, harmony, and discipline while freeing teachers and administrators from policing clothing—this paragraph best supports which statement?

Given data

• Students spend too much time on trivial distractions like fashion and often dress inappropriately on campus.
• Instead of drafting another dress policy, the author proposes mandatory school uniforms.
• Claimed benefits: stronger sense of community and harmony, greater discipline, and reduced need for teachers and administrators to police clothing.

Concept/Approach (critical reasoning: main-support match)
Identify the author's central recommendation and the reasons that support it, then choose the statement that the paragraph most directly endorses.

Step 1: Extract the core recommendation
Core recommendation = Make school uniforms mandatory.

Step 2: Link reasons to the recommendation
Reasons cite community/harmony, discipline, and freeing staff from clothing-police duties. All are benefits of uniforms.

Step 3: Eliminate scope-creep claims
No evidence that uniforms improve college admissions or that inappropriate clothing causes failing grades, nor that students reject community in general, nor any quantified 25% policing time.

Verification/Alternative
If the passage were summarized in one line, it would say: "Therefore, uniforms should be compulsory." This exactly matches the correct option.

Common pitfalls
Do not choose options that add new statistics, predict admissions outcomes, or generalize about student motives; the paragraph does not support those.

Final Answer
School uniforms should be compulsory for high school students.