Consider a body that returns to its original state of equilibrium after it is given a small compression. What can you say about the equilibrium of the body ?

stable equilibrium

1. As the body returns to its original state of equilibrium, the body is in stable equilibrium.
2. It would have been an unstable equilibrium if the body hadn't regained its original state of equilibrium. 
3. The body goes back to its original state of equilibrium so IT IS in equilibrium.
4. It cannot be dynamic equilibrium as no mention of body in motion is made.