A. The Colorado River over millions of years B. Formed by the Colorado River over millions of years C. It was formed by the Colorado River over millions of years D. When it was formed by t
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Mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 1 to 6.
The Colorado River over millions of years
Formed by the Colorado River over millions of years
It was formed by the Colorado River over millions of years
When it was formed by the Colorado River over millions of years