A client with chronic obstructive pulmonary disease (COPD) recently lost a spouse and frequently voices frustration, saying, "If I can just get better, I promise I'll be a better person." Which behavior indicates the bargaining stage of the Kubler-Ross model of grief?

Experiencing numbness and denying the reality of the loss

Expressing they are sad and not wanting to move on with life without their deceased partner.

Displaying anger and blaming others for current difficulties

Expressing regret and attempting to negotiate a different outcome