Who developed a theory focusing on how stressors affect a person's adaptation?

The correct choice is associated with Betty Neuman, who is renowned for developing the Neuman Systems Model. This model emphasizes the importance of understanding how stressors impact an individual's ability to adapt and maintain their health. Neuman's theory is holistic, considering the physiological, psychological, sociocultural, developmental, and spiritual factors that influence how a person responds to stressors.

Her model outlines the concept of a "client system," where the client is viewed as a whole entity interacting with the environment. It stresses the need for nursing interventions to help clients strengthen their lines of defense against stressors, promote wellness, and enhance adaptation to change. The Neuman Systems Model is widely utilized in nursing practice, education, and research to develop effective strategies for patient care and support.