Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now listen to the passage. According to the professor, what determines the distance of a gross—hopper’s jump
A．The number of impulses transmitted to the grasshopper’s legs. B．The age of the grasshopper. C．The number of sensory organs the grasshopper has. D．The size of the nerves that control walking.