Respuesta :
“Students attending school with mandatory uniform policies experience less pressure than do students who must choose their wardrobes”. Right from that you can see that the authors position is that he/she doesn’t agree with the fact that students should have uniforms.
Answer: "On average, school uniforms cost $150 a year, which is much less than the average spent on back-to-school clothes."
Explanation: This is the answer because it proves the author's point that school uniforms are less expensive than buying "... an entire wardrobe of designer clothes and trendy styles".