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Difficulty: EasyExplicit Main Idea

Foreign Object Debris (FOD) prevention is vital for maintaining aircraft flight safety on military airfields. Stray items such as loose bolts, safety wire, tools, and small stones can be sucked into jet turbine intakes or puncture aircraft tires during takeoff. Ground crews perform daily visual inspections, known as FOD walks, and operate specialized vacuum sweeper trucks across runways and taxiways to remove these hazards. In addition, maintenance personnel must strictly inventory all tools before and after servicing an aircraft to ensure nothing is left behind. Through rigorous inspections and tool control, personnel prevent costly mechanical damage and protect pilot safety.

Which of the following statements best expresses the explicitly stated main idea of the passage?

  1. A
    Ground crews operate specialized vacuum sweeper trucks across runways and taxiways.
  2. Preventing foreign object debris is essential to preserving aircraft safety on military airfields.Answer
  3. C
    Maintenance personnel must strictly inventory all tools before and after servicing an aircraft.
  4. D
    All military operations depend entirely on daily runway vehicle inspections.

Answer

Preventing foreign object debris is essential to preserving aircraft safety on military airfields.
The passage opens with a direct topic sentence establishing that FOD prevention is vital for airfield flight safety, and all subsequent sentences describe specific hazards and measures taken to accomplish that goal.

Step-by-Step Solution

1
Locate the explicit topic sentence
The opening sentence directly states that Foreign Object Debris (FOD) prevention is vital for maintaining aircraft flight safety on military airfields.
Explicit main ideas in technical expository texts are commonly anchored in the opening topic sentence.
2
Evaluate the remaining sentences against the topic sentence
All subsequent sentences provide supporting examples of hazards, sweeping procedures, and tool inventory controls that serve this core goal.
Verifying that every detail develops the central assertion confirms the main idea.

Key Concept

Identifying explicitly stated topic sentences and distinguishing overarching claims from supporting procedural details.
Estimated Time:45s
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Topics

Explicit Main Idea

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