Health psychologists are least likely to focus attention on a. the behaviors that to prevent illness. b. how emotions influence our risk of disease. c. the role of bacteria in producing illness. d. how our perceptions influence feelings of stress. e. immunization rates over time.

Answer is letter C. THE ROLE OF BACTERIA IN PRODUCING ILLNESS. This can be a responsibility of a microbiologist, cell biologist, medical technologist or even a pathologist. The rest of the choices are all duties and responsibilities of a health psychologist. Health psychologists, moreover, are mental health professionals which have expertise on the connection of physical and mental states. They are concern with the understanding of how psychological, behavioral and cultural factors contribute to physical health an illness. Health psychologists study various reactions of individuals when diagnosed with a particular disease and factors affecting treatment choices, assist patients through chronic disease care and encourage a healthy lifestyle. They also conduct interviews and perform assessments on specialized patient care program.    

Hmmm i'm not sure about this one