The correct option for completing the sentence is
B. take off.
Explanation of the Correct Answer:
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Understanding the Context: The sentence discusses a plane that was scheduled to depart at a specific time (10:00 hrs) but was delayed due to bad weather. The key action here is the departure of the plane.
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Meaning of "Take Off": In aviation terminology, "take off" specifically refers to the moment when an aircraft leaves the ground and begins its flight. It is the standard term used to describe the departure of an aircraft from an airport.
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Relevance to the Sentence: Since the sentence is about a plane's scheduled departure, "take off" is the most appropriate choice. It directly relates to the action of the plane leaving the ground.
Why the Other Options Are Incorrect:
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A. fly out: While "fly out" can refer to a plane departing, it is less specific than "take off." "Fly out" can imply the entire journey of the plane, not just the moment of departure. Therefore, it does not fit as precisely in the context of the sentence.
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C. start out: This phrase is more commonly used in a general context to indicate beginning a journey or activity. It is not specific to aviation and does not convey the technical action of a plane departing. Thus, it is not suitable for this context.
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D. shoot off: This is an informal expression that can mean to leave quickly or suddenly. It is not typically used in the context of aviation and lacks the formal tone required for discussing flight schedules. Therefore, it is not appropriate for this sentence.
Summary of Key Points:
- The correct answer is B. take off, as it specifically refers to the departure of an aircraft.
- "Take off" is the standard aviation term for when a plane leaves the ground.
- Other options like "fly out," "start out," and "shoot off" are either too vague, informal, or not specific to aviation.
- Understanding the context and specific terminology is crucial for selecting the correct option in such questions.