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The main idea is The Great Lakes are the world's largest lakes.
Which of the following sentences is a supporting detail for the main idea? Explain.
a) They begin at the northeastern corner of Minnesota.
b) There are five Great Lakes.
c) At 350 miles long and 160 miles wide, Lake Superior is the largest lake on Earth.
d) The five lakes are known as Lake Superior, Lake Huron, Lake Michigan, Lake Erie, and Lake Ontario.
What is c) At 350 miles long and 160 miles wide, Lake Superior is the largest lake on Earth?