Final answer:
A small Berman (BOA) oral airway is typically 50 mm in length.
Step-by-step explanation:
The correct answer is a) 50 mm. A small Berman (BOA) oral airway is typically 50 mm in length. The Berman oral airway is a medical device used to maintain the patency of the airway, especially during anesthesia or unconsciousness. It is designed to fit into the mouth and prevent the tongue from obstructing the throat.