hardFPSCNTSCSSPPSCOTSIBASTSECATMDCATFamous Inventions & Inventors
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Correct Answer: B: Igor Sikorsky
Explanation: Igor Sikorsky developed the first successful practical helicopter in 1939. His invention allowed vertical takeoff and landing, making helicopters useful for rescue missions, military operations, medical emergencies, and transportation. Helicopters transformed aviation technology by enabling access to difficult and remote locations. Sikorsky’s work remains highly influential in modern aerospace engineering and aircraft development.
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