Because of changes in the way that health professionals think about physical illness over the last few decades,which model of illness has become dominant

A)  treatment and prevention 
B)  psychosomatic 
C)  biopsychosocial 
D)  immunology

The biopsychosocial model of illness is now the dominant model due to a shift in thinking from viewing illness as solely driven by biology to considering the complex interplay of biological, psychological, and social factors on health and illness. This model recognizes that health and illness are affected by multiple factors and that treatments need to take into account an individual's unique experiences and context. The other options, such as treatment and prevention or immunology, are more narrow in focus and do not capture the holistic approach of the biopsychosocial model. The psychosomatic model, which suggests that physical symptoms are caused by psychological factors, has also been largely replaced by the broader biopsychosocial approach.