Marvin,who Lives in San Francisco,has Been Asked to Host a Teenage

Multiple Choice

Marvin,who lives in San Francisco,has been asked to host a teenage alien,Regor,as part of an intergalactic exchange program.Marvin is sure that Regor would love to experience the adventure of sailing,but decides he should introduce the concept of a "sailboat" first.Marvin shares as many details as he can remember about the small sailboat he had as a child.This is called a(n) ____.

A) prototype
B) model
C) paradigm
D) exemplar