3. In the South American Andes, the altiplano between the Cordillera Oriental and the western Cordillera Occidental is widest in

A. Peru.
B. Ecuador.
C. Bolivia.
D. Chile.

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Writeacher posted a link for you with the answer in it.

Here's another link.

http://en.wikipedia.org/wiki/File:Altiplano_map.png

You might not need as much help for your test if you had carefully studied your text materials.

To find the answer to this question, you can start by researching about the altiplano in the South American Andes. The altiplano refers to the high plateau located between two mountain ranges: the Cordillera Oriental and the Cordillera Occidental. The question is asking which country has the widest altiplano in this region.

To find the answer, you can search for information on the altiplano in each of the given countries: Peru, Ecuador, Bolivia, and Chile. Look for facts about the width of the altiplano in each country.

Upon doing the research, you will find that the widest altiplano in the South American Andes is located in Bolivia. Therefore, the correct answer is C. Bolivia.