Which term describes the process by which the body achieves stability through physiological changes?

The correct term for the process by which the body achieves stability through physiological changes is allostasis. Allostasis refers to the body's ability to adapt to stressors and maintain stability, or homeostasis, through changes in various physiological systems. It recognizes that the body has to adjust in response to diverse environmental challenges, indicating a dynamic process where the body continuously adapts to achieve balance over time.

Homeostasis, while closely related, specifically describes the stable internal state that the body strives to maintain under normal conditions. It focuses on maintaining constant conditions, such as temperature and pH, rather than the adaptive changes that occur in response to stress or varied demands.

Senescence refers to the gradual deterioration of function and vitality with age, which is not directly related to the concept of stability through physiological changes in response to external or internal stressors.

Intimacy vs. Isolation is a psychosocial stage in Erikson’s theory of human development, dealing with relationships and social connections, rather than physiological stability or adaptation.

Thus, allostasis captures the ongoing adjustments the body makes in response to stresses, making it the appropriate answer.