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      Question

      'SONAR'ismostlyusedby-

      A Doctors Correct Answer Incorrect Answer
      B Engineers Correct Answer Incorrect Answer
      C Astronauts Correct Answer Incorrect Answer
      D Navigators Correct Answer Incorrect Answer

      Solution

      a method or device for detecting and locating objects especially underwater by meansofsoundwavessentouttobereflectedby the objects also : a device for detecting the presenceofavessel(suchasasubmarine)bythe sound it emits in water.

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