Because it's easier to scale hustle then relative humidity. and high relative humidity and high precipitation rate are the associates. I should know because I grew up in both greater New Orleans, which is subtropical, and the Oklahoma panhandle, which is semi-arid 5% relative humidity or higher is normal in New Orleans. While 6% relative humidity is relatively familiar in the Oklahoma and Texas panhandles.
Answer: D
Explanation: I just finished the exam :)
The answer is lithosphere.
Earthquakes are caused by shifts in the outer layers of Earth—a region called the lithosphere.