The next question refers to This Mystery Rocks! by Cynthia Schlagel.
The sentences have been numbered to help you identify them more easily.
This Mystery Rocks! By Cyntha Schlagel
The Drifting Rocks are a strange phenomenon still unexplained by science. Located in
Death Valley, California, the rocks sit on hot, flat ground. Unlike normal rocks, they have
trails etched behind them as if they have traveled across the sand. “Some trails are only a
few feet. Some trails are over a half a mile long. Each trail is as baffling as the next.
The variety of rock movement has baffled scientists for decades. Some rocks seem to roll
as they move forward. Some take unexplainable routes. 10Large ones have traveled past
small ones that have stayed still. 11Some scientists suggest that the rocks are pushed by
wind. 12Others believe they slide on small amounts of ice or mud. 13So far, research has not
confirmed any theory.
Which choice best describes how the author organized information?
A Cause and effect
B Chronological order
C Fact by fact
D Problem-solution