Answer: D. B and C.
Step-by-step explanation:
Since the chief of surgery is curious about finding out how well and often the checklist is actually being used, the steps to take include:
• Go to the operating rooms and observe the checklist being used a few times. Collect some data about the use of the checklist
• Talk to surgical nurses about their experience with the checklist.
With these options selected, the chief of surgery will be able to know how well and often the checklist is used.
Therefore, the correct option is D.