The average velocity of the car is 12 m/s. Therefore the correct answer is option c.
The average velocity of the car can be calculated by dividing the displacement by the time. In this case, the displacement is 60 m and the time is 5 s. To find the average velocity, divide the displacement by the time:
Average velocity = displacement / time
Average velocity = 60 m / 5 s
Average velocity = 12 m/s
Therefore, the average velocity of the car is 12 m/s.