Question

Difficulty: EasyDrawing Logical Conclusions

In a military logistics depot, all electronic flight instruments must remain inside sealed protective containers until transport vehicles pass their final pre-loading inspection. Exposing unsealed instruments to unconditioned hangar air before vehicle approval allows condensation to short-circuit internal sensors. When technicians unpacked the latest flight instrument shipment, none of the sensors had suffered condensation damage.

Based on the passage, which of the following is the most logical conclusion?

  1. A
    Technicians used specialized heaters to dry unsealed instruments on the hangar floor.
  2. The instruments were not exposed to unconditioned hangar air before vehicle approval.Answer
  3. C
    Condensation on the hangar floor caused the transport vehicles to fail their pre-loading inspection.
  4. D
    The protective containers were unsealed before the pre-loading inspection took place.

Answer

The instruments were not exposed to unconditioned hangar air before vehicle approval.
The text states that exposure to unconditioned air before vehicle inspection causes sensor condensation damage. Because the shipment arrived with completely undamaged sensors, it must logically follow that the instruments were kept protected from unconditioned air until approval was granted.

Step-by-Step Solution

1
Identify the cause-and-effect rule stated in the passage.
Unsealing instruments and exposing them to unconditioned hangar air prior to vehicle inspection causes condensation damage to internal sensors.
Establishing the conditional rule provides the logical framework needed to evaluate outcomes.
2
Examine the reported outcome of the shipment.
Technicians found zero condensation damage across all unpacked sensors.
Analyzing the observed result allows for deductive reasoning.
3
Deduce the required prior condition.
Since exposure leads to damage and no damage occurred, the improper exposure did not take place.
Applying modus tollens confirms the logical conclusion.

Key Concept

Drawing a deduction from a conditional cause-and-effect statement when the outcome is known.
Estimated Time:45s
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