On what should we blame earthquakes? They are the fault of faults, of course! The cracks and gaps in the tectonic plates that form Earth’s surface are known as faults. Earth's tectonic plates are slowly and constantly sliding past and colliding with each other. Sometimes the rough edges of the plates get stuck as the rest of the plates keep moving. Earthquakes occur when the edges suddenly become unstuck and slip along a fault. Which sentence from the paragraph gives the most important information in the paragraph?

A.
“On what should we blame earthquakes?”
B.
“They are the fault of faults, of course!”
C.
“Earth's tectonic plates are slowly and constantly sliding past and colliding with each other.”
D.
“Earthquakes occur when the edges suddenly become unstuck and slip along a fault.”
(Language Arts)