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Difficulty: MediumResolve the Paradox

A pharmaceutical logistics company recently replaced its fleet of diesel-powered refrigerated delivery trucks with electric refrigerated trucks. The new electric trucks maintain target refrigeration temperatures with greater consistency and experience far fewer in-transit temperature spikes than the diesel trucks did. Nevertheless, during the six months following the replacement, the company recorded a higher percentage of spoiled, unusable vaccines upon arrival at regional clinics than it had recorded in the preceding six months.

Which of the following, if true, most helps to resolve the apparent discrepancy described above?

  1. A
    The electric refrigeration units consume considerably less energy per mile traveled than the older diesel refrigeration units.
  2. B
    The internal cargo holds of the new electric trucks frequently experience severe temperature spikes while traveling on highways.
  3. Recharging the electric truck batteries between delivery routes takes several hours longer than refueling diesel trucks, causing packaged vaccines to sit on uncooled staging docks for extended periods prior to loading.Answer
  4. D
    The new electric trucks are equipped with automated alarm systems that notify drivers immediately whenever cargo temperatures deviate from the required range.
  5. E
    Most regional clinics upgraded their on-site storage facilities to include larger capacity medical freezers during the same six-month period.

Answer

The statement explaining that longer battery recharging times cause packaged vaccines to sit on uncooled staging docks prior to loading resolves the paradox.
The correct answer successfully bridges both facts by revealing that the spoilage occurs during a newly prolonged pre-transit phase (dock staging during battery recharge) rather than during active road transit. This allows both facts to be entirely true: the trucks regulate temperature better while in transit, yet more vaccines spoil overall before delivery due to dock delays.

Step-by-Step Solution

1
Identify the two seemingly contradictory facts presented in the stimulus.
Fact 1: The new electric delivery trucks maintain refrigeration temperatures with greater consistency and fewer temperature spikes during transit. Fact 2: A higher percentage of vaccines spoiled before arriving at the clinics after the switch to electric trucks.
Resolving a paradox requires a clear understanding of the specific tension between the established premises.
2
Determine the necessary mechanism required to bridge the discrepancy.
The correct answer must explain how overall vaccine spoilage increased despite superior temperature control while inside the moving trucks, without denying either premise.
A valid resolution allows both stated premises to remain true simultaneously by identifying an overlooked stage in the process.
3
Evaluate candidate explanations to find a factor occurring outside of active transit that accounts for the spoilage.
Learning that the time required to recharge electric batteries creates a delay on uncooled loading docks identifies a point of thermal degradation before transit even begins.
This bridges the gap between excellent in-transit temperature control and higher total spoilage upon delivery.

Key Concept

Reconciling contradictory logistical trends through an unaddressed stage of the delivery timeline.
Estimated Time:1m 15s
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Topics

Resolve the Paradox

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