Nurses on a medical-surgical unit were recruited for a study about the satisfaction of serving in a preceptor role. Half of the nurse volunteers were randomly assigned to meet with hospital Nurse Educator staff in small groups every two weeks for social support and debriefing. The remaining nurse volunteers continued to follow their unit's usual preceptor practices. Which type of study is this?
A. Evidence-based
B. practice
C. Non-experimental
D. Experimental
E. Satisfaction Survey