It’s a question about YOUR life, not mine. So I cannot answer. But I can write the quote in simpler words:
“If you don’t get distracted and you keep trying, you can get anywhere you want to go and do anything you want to do.”
I've read this story before, it's in the Nevraka frontier, so D.
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".