From the given figure, we have a force-displacement curve.
Let's determine what the area of the region enclosed by the curve represents.
Given that the curve is a force-displacement curve, the area of the region under the curve represents the work done by the force on the object.
Here, the distance of the distance of the object is displaced by the force.
Thus, we can say the displacement(x) is represented on the x-axis, while the force(f) is represented on the y-axis.
Therefore, the area of the region enclosed by the curve represents the work done on the object by the force.
ANSWER:
The work done on the object by the force