Answer:
Check the explanation
Step-by-step explanation:
Professor Boudreaux started working less as an economist that he was initially trained as and hiring the services of Dr. Bostwick which would make him have to give up to stop working and learn pediatric gastroenterology, which at best the outcome would have been all the same.
A. Dr. Bostwick was able to offer medical services that rarely or did not meet up or satisfy his own wants, so he traded those services for money which he later on used to purchase things that satisfied his wants.