Final answer:
The correct abbreviation that represents a hospital department or service is All of the above (d). CCU stands for Cardiac Care Unit, Peds for Pediatrics, and Gyn for Gynecology.
Step-by-step explanation:
The correct abbreviation that represents a hospital department or service is d) All of the above.
The abbreviation CCU stands for Cardiac Care Unit and is a department in a hospital that specializes in the care of patients with heart conditions. Peds is short for Pediatrics, which is a department focused on medical care for children. Gyn is an abbreviation for Gynecology, a department that provides medical and surgical care for women's reproductive health.
All three abbreviations represent different hospital departments or services, covering specialized areas of healthcare.