Which of the following displacement graphs matches the simulation snapshot shown below?

The option D of the following displacement graphs matches the simulation snapshot.

Explanation:

As per the given information through the graph.

By convention, a displacement to the right is considered positive, and a displacement to the left is considered negative. In the tube, the red divider is displaced to the left of its original position (marked by the red dot), and the green divider is displaced to the right of its original position (marked by a green dot).

The only graph that shows a negative displacement of the red divider and a positive displacement of the green divider is graph D.

Therefore option D matches the simulation snapshot in the displacement graphs.