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 tries to describe a sailboat as an average of all sailboats in terms of such features as length,width,height of mast,materials,and color.This is called a(n) ____.

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