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.