Aeronautics is the science or art of
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flight
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aerobics
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aircrafts engineering
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helipad landing
A
Correct answer
Explanation
Aeronautics is the science and art of flight through the atmosphere, including the design and operation of aircraft. 'Flight' is the most accurate and general answer among the options. Aerobics is physical exercise, 'aircrafts engineering' is narrower than the full scope of aeronautics, and 'helipad landing' is too specific.