[Answer] 8. Which of the following exemplifies the Hawthorne effect?A. Cancer patients participate in therapy sessions and talk about their worries to improvetheir mental health.B. Cancer patients volunteer for an experimental treatment and report improved mood tothe researchers during the first few days of the treatment.C. Doctors treating those with terminal cancer expect married patients to live longer thanunmarried patients.D. Patients who know they have cancer act differently from patients with undiagnosedcancer.