Which of these terms is an acronym?
laser
radar
sonar
all of the above
Laser stands for "Light Amplification by Stimulated Emission of Radiation"; Radar for "Radio Detection and Ranging"; Sonar for "Sound Navigation and Ranging"
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Answers by country
laser
radar
sonar
all of the above
answers

16

11

17

9362

38

21

347

25

17

12

14

136

157

52

32

10

270

26

19

28