The four major concepts in nursing theory are:

The correct answer highlights the four major concepts in nursing theory: Person, Environment, Nursing, and Health. These concepts form the foundation of nursing practice and guide the development of nursing theories.

The "Person" concept refers to the individual or group receiving care, emphasizing the uniqueness of each patient and their holistic needs. Understanding the person extends beyond mere biological aspects to include emotional, social, and spiritual dimensions.

"Environment" encompasses various external factors that affect the patient’s health, including physical, social, and cultural contexts. It recognizes that health does not exist in a vacuum and that external influences can significantly impact a person’s well-being.

"Nursing" itself is a vital concept that includes the actions and responsibilities of the nurse in providing care. It involves the application of knowledge, skills, and attitudes to support patients in achieving optimal health outcomes.

Lastly, "Health" represents the overall state of well-being, which nursing aims to promote and maintain. This concept is dynamic and varies with each individual’s circumstances, emphasizing the need for personalized care in nursing.

These four interrelated concepts serve as a framework for nursing practice and education, guiding nurses in their efforts to provide comprehensive and effective care.