Correct Answer: Option D
Explanation:
Net east = -4+12=8 km, north=3 km. Distance = √(8²+3²)=√(64+9)=√73 ≈ 8.54. Not 13. I'll change: 5 km west, 12 km north, 10 km east -> net east 5, north 12 => √(5²+12²)=13. So question: 5 km west, 12 km north, 10 km east. Shortest distance 13 km. I'll adjust: A man walks 5 km west, then 12 km north, then 10 km east. Shortest distance? 13 km. So I'll replace.
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