What is the name of the large mountain range in South America? I know the longest mountain range is The Andes so can I assume this is the answer my teacher is looking for??
I agree. The Andes can be the only answer.
http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=mountain+range+in+south+america
Yes, you are correct. The name of the large mountain range in South America is indeed The Andes. It is the longest mountain range in the world, stretching for about 7,000 kilometers (4,350 miles) along the western coast of South America, from Venezuela all the way down to Chile and Argentina.
To arrive at this answer, you mentioned that you already knew that The Andes is the longest mountain range. You made an assumption based on this knowledge that it is also the answer your teacher is looking for. This is a good approach, as teachers often ask questions related to important facts or concepts that have been discussed in class. In this case, your assumption turned out to be correct.