A commercial vertical farm located in a high-latitude urban center plans to reduce its energy overhead by replacing half of its indoor electric LED grow lights with a passive fiber-optic system that collects natural sunlight via rooftop lenses and pipes it into cultivate chambers. Management contends that because electricity consumed by artificial lighting accounts for over sixty percent of the farm's monthly operating expenditures, implementing this solar piping system will significantly decrease total monthly operating expenses. Which of the following is an assumption on which management's argument depends?
- AVertical farms operating in lower-latitude regions save a substantially higher percentage of lighting costs when using solar piping systems than do farms in high-latitude regions.
- BThe crops produced under redirected daylight will command a higher market price per unit than crops grown under standard LED lighting.
- The maintenance and operating costs associated with the rooftop tracking lenses will not equal or exceed the monetary savings generated from lower electricity usage.Cevap
- DThe fiber-optic system will entirely eliminate the farm's reliance on electrical power for lighting during peak sunlight hours.
- EThe initial cost of installing LED fixtures is significantly greater than the upfront capital expenditure required to install fiber-optic light piping.
Cevap
The argument depends on the assumption that the costs required to operate and maintain the new rooftop collection system will not outweigh or negate the financial savings achieved from reduced electricity consumption.
Management concludes that total monthly operating expenses will fall because electricity usage drops. For a reduction in one specific expense (electricity) to lead to a net reduction in total operating expenses, the replacement technology must not incur new secondary operating expenses (such as maintenance for rooftop collectors) that equal or outweigh the savings. Applying the Negation Test confirms this: if maintenance costs do meet or exceed electricity savings, total monthly operating expenses will not decrease.
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Identifying Unstated Assumptions