Answer
C
Work Step by Step
For position-versus-time to velocity-versus-time graphs, you want to look at the slopes on the position-versus-time graphs.
We can see that the the slope is initially positive. Then at a certain point, the slope slowly decreases to zero (horizontal line).
We can rule out graphs a and d because both start with negative velocity, which would mean that the initial slope in the position-versus-time graph would be negative.
We can also rule out graph b because it starts at 0, which would mean that the initial slope in the position-versus-time graph would be zero.
