The legal profession conducted a study to determine the percentage of cardiologists who had been sued for malpractice in the last three years. The sample was randomly chosen from a national directory of doctors. Identify the individuals in the study.
A) the doctor's area of expertise (i.e., cardiology, pediatrics, etc.)
B) all cardiologists in the directory
C) the responses: have been sued/have not been sued for malpractice in the last three years
D) each cardiologist selected from the directory
