Identify the sample used in the researches below by choosing the letter of the best answer: Harmon (in Nieswiadomy, 2008) collected data from 8 nurses who were employed between 1951 and 1965 in a Virginia state hospital. These nurses were now retired and had between 12 and 46 years of psychiatric nursing experience. The researcher wanted to describe the experiences of these nurses who practiced in a state mental hospital before and during the introduction of antipsychotic medications. They expressed resignation and frustration while trying to provide care despite crowded wards and inadequate personnel and supplies. The nurses indicated that they focused on the patient's body instead of on the patient's mind. The camaraderie they experienced with other nurses helped them continue in their positions, despite what they felt to be a "thankless job."