Final answer:
None of the provided options is accurate.
The total opportunity cost of attending college is $31,000, including tuition, books, and lost earnings due to reduced work hours. None of the options provided in the question accurately represents this calculated amount.
Step-by-step explanation:
When calculating the opportunity cost of attending college, it's important to consider both the direct expenses and lost income. In this scenario, the tuition is $25,000, and additional costs for books total $1,500. However, because attending college reduces the ability to work full-time, there's a loss of income to consider.
If normally working 40 hours per week at $15 per hour, for 15 weeks, equates to $9,000 (40 hours x $15 x 15 weeks). When attending college, you can only work 20 hours, which means you'll earn $4,500 (20 hours x $15 x 15 weeks) during that period. The opportunity cost in lost earnings is the difference: $4,500 ($9,000 - $4,500).
Therefore, the total opportunity cost is the sum of tuition, book costs, and lost earnings, which equals $31,000 ($25,000 + $1,500 + $4,500).
The correct answer that incorporates these calculations is not listed among the options provided, hence none of the provided options (a. $1,500, b. $7,500, c. $15,000, d. $25,000) is accurate.