Toy car and magnets

This task is about magnetism.
toy-car-magnet.png

A bar magnet has been glued to the top of this toy plastic car.

Question

a)  What would happen if another bar magnet was moved towards it as shown in the diagram?
     The toy car would:

    • stay where it is and not move.

    • move forwards.

    • move backwards.

    • turn around towards the magnet being held.

Question 2Change answer

b)  Why was a plastic car used in this experiment and not a metal car?