Which answer is a scientifically accurate description of velocity?

Question 3 options:

The car traveled 70 mph north to Atlanta on Interstate 75.


The motorcyclist traveled along a highway at 55 mph.


The hiker began hiking the park's five-mile north hiking trail at 8:00 a.m. with plenty of daylight left to complete the hike before dark.


Walking south along the two-mile canyon trail generally takes less time than traveling the same trail north because walking south is all downhill.