c. 2
Step-by-step explanation:
Before solving the problem, we should understand what is the length that corresponds to one notch in the graph.
We see that there are 3 notches between 0 and 6, and that the length of the notches is constant: so, each notch corresponds to the same length. Since we have 3 notches, the length of each notch is

Since the car is located at the first notch, it means that its position is:
