Final answer:
The correct index to identify the number of C-sections performed by a specific obstetrician is the Physician index.
Step-by-step explanation:
The correct answer is b) Physician index.
The Physician index is used to identify the number of procedures performed by a specific doctor or obstetrician. In this case, you would use the Physician index to determine the number of C-sections performed by the specific obstetrician.
The Procedure index refers to the number of different types of medical procedures performed in a specific hospital or healthcare facility. The Disease index is used to track the prevalence and incidence of different diseases. The Case index is a general term that refers to the indexing or tracking of individual cases in a specific context, such as legal cases or medical cases.