Which of the following statements best characterizes alluvial fans?
A) They develop where a high-gradient stream leaves a narrow mountain valley and deposits on a flat area.
B) They develop where a low-gradient stream leaves a wide valley and deposits in a canyon.
C) They develop where a low-gradient tributary meets the main stream.
D) They develop where a high-gradient tributary splits when it enters a flat area.
Correct Answer:
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