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Difficulty: HardWeakening Arguments

To reduce cargo loss from food spoilage during long-distance transport, a logistics firm plans to equip all its refrigerated trucks with automated high-precision humidity sensors. The firm argues that because elevated humidity is the primary catalyst for mold proliferation in boxed produce, real-time sensor alerts allowing drivers to manually open external air vents whenever humidity spikes will significantly lower the rate of produce spoilage. Which of the following, if true, most undermines the reasoning behind the logistics firm's plan?

  1. Opening external air vents during highway transit introduces ambient outdoor moisture and road dust into the cargo bay, creating optimal conditions for rapid mold spore activation inside the produce packaging.Answer
  2. B
    Automated high-precision humidity sensors require higher annual calibration costs and driver training expenditures than the standard mechanical gauges currently installed in the fleet.
  3. C
    Real-time environmental alerts increase driver vigilance and dramatically decrease the average time required for fleet operators to detect refrigeration unit power failures.
  4. D
    Refrigerated shipments passing through arid geographical regions experience lower overall spoilage rates than shipments traveling along humid coastal transit corridors.
  5. E
    Mold proliferation is not the sole factor responsible for cargo degradation during multi-day commercial agricultural transport.

Answer

The statement that opening external air vents during highway transit introduces ambient outdoor moisture and road dust into the cargo bay, creating optimal conditions for rapid mold spore activation inside produce packaging.
The correct answer identifies a fatal flaw in the plan's execution mechanism. The author assumes that opening external vents when humidity spikes will lower spoilage. However, if opening those vents introduces outside moisture and dust that actively accelerates mold spore activation inside the packaging, taking the planned action will actually increase or exacerbate produce spoilage rather than reduce it.

Step-by-Step Solution

1
Deconstruct the argument into premise, plan, and central assumption.
Premise: Elevated humidity causes mold proliferation in boxed produce. Plan: Install real-time humidity sensors so drivers can open external air vents when humidity spikes. Conclusion: This plan will significantly lower produce spoilage.
Identifying the unstated assumption is essential for evaluating argument validity.
2
Identify the core underlying assumption of the plan.
The argument assumes that opening external air vents when humidity spikes will successfully lower internal humidity without introducing new factors that promote mold growth.
Weakening questions targeting plans typically break the connection between the action taken and the desired goal.
3
Evaluate the impact of introducing new evidence on the central assumption.
If opening the vents introduces ambient moisture and dust that activates mold spores inside the packaging, the proposed action directly causes the exact harm it was designed to prevent.
Showing that an action produces a counterproductive side effect directly undermines the feasibility of achieving the stated goal.

Key Concept

Plan-to-Goal Causal Breakdown and Counterproductive Side Effects
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Topics

Weakening Arguments

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