Which Example of Best Practice Review Would Likely Be Assigned

Multiple Choice

Which example of best practice review would likely be assigned a Level I?

A) Information from the only existing study of an intervention.
B) Information from review of several randomized controlled trials of an intervention.
C) Information from the opinion of a person widely recognized as an expert in the use of the intervention.
D) Information from a non-randomized well-designed controlled trial of the intervention.