In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank. Earth...

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Earthquake is the (1)_________ breaking and displacement of substantial portions of the earth's outer rocky crust. During an earthquake, rock disturbances can cause rivers to change their flow. Landslides (2)_________ by earthquakes can cause significant destruction and loss of life. Tsunamis are a (3)_________ of damaging waves caused by large earthquakes that occur under the ocean. Earthquakes rarely directly kill anyone. Many (4)_________ and injuries are caused by falling debris and the fall of structures. The (5)_________ of an earthquake relies on how much and how far rock cracks and shifts.

Select the most appropriate option to fill in blank number 4.