Answer:
The correct answer is: Enduring Dynamics Model.
Step-by-step explanation:
The Enduring Dynamics model is one way to try to understand why couple's divorce.
According to this concept, some couples divorce mainly because there were certain issues within the couple before getting married that were never resolved or even talked about and they remain hidden or at least latent within the relationship until a point is reached when the latent issues pop out and become unbearable for both the individuals.
In this particular case, the Eastons had a few difference that they didn't seem able to reconcile but they hoped marriage would provide them with some stability. Several months into marriage they found themselves fighting about the same things again and on the road to divorce.
Their experience goes along with the Enduring Dynamics Model.