Q. The travelling speed of cranes varies from (A) 20 to 30 m/s (B) 10 to 15 m/s (C) 5 to 10 m/s (D) 1 to 2.5 m/s ποΈ Show Answer π¬ Discuss π Share β‘Menu β Correct Answer: (D) 1 to 2.5 m/s