What would most likely be impossible in plants without turgor pressure?

C. Average Speed = 4 m/s

Explanation:

Average speed is defined as total  distance travelled per unit time taken

From = 5s to = 10 s

Total time = 10 -5 = 5s

Distance travelled in first 5s=  = 10 m

Distance travelled in first 10s = 30 m

Total distance between 5 s- 10 s = 30 - 10 = 20 m

!! Please look at the attached image