With a PhD in Mathematics Education from Georgia State University, Dr. Siegel teaches mathematics at Central Arizona College. His courses include various make­up classes and a number of lectures for future primary school teachers.
If the course fails to provide complete satisfaction to you, you can easily exchange it for any other course that we offer. Or you can get your money back.
Where is the passage most likely to have been taken from?

A．A news report.

B．A book review.

C．A lesson plan.

D．An advertisement.