A Standard Scheme,called the ________,Devised in the Early 20th Century,is

Multiple Choice

A standard scheme,called the ________,devised in the early 20th century,is used to describe the world's diverse climates.

A) Vön Thunen model
B) Zelinsky's classification
C) Baron la Salle's model's
D) Alfred Wagener's system
E) Köppen system