Answer and explanation: The chemotherapy with drugs has the main goal to destroy the cancer cells. Although, the drugs are not specific for cancer cells, the treatment also destroys the healthy cells of the body. And its include all types of the cells of the body, mainly the ones that support the immune system. So the reason why the client are feeling depressed (anxiety and fear) and constatly tired its because of the effects of the drugs. Its also important to say that the cancer condition affects the emotional of the person too, leading to psychologic symptons.