Love (cupid) gave him directions to Juliet's balcony.
C I'm 99% positive it is the answer (curse this 20 characters or less.)
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".
Spender is the archaeologist for the fourth expedition. He reveres Mars and quickly leaves the crew to explore the planet by himself. He learns to read Martian. Finally, he decides that he should kill off the crew in an effort to preserve Mars.