A tsunami is primarily the result of which of the following?

Hurricanes are severe weather systems characterized by strong winds and heavy rainfall, primarily affecting coastal regions. While they can cause storm surges and localized flooding, they do not generate tsunamis. The mechanisms that create hurricanes are distinct from those that lead to the seismic activity responsible for tsunamis.

El Niño is a climate phenomenon that involves the warming of ocean surface temperatures in the central and eastern Pacific Ocean. While it can influence weather patterns globally, it does not directly cause tsunamis. Rather, El Niño impacts climate and weather, not seismic activity or underwater disturbances that lead to tsunami formation.

Tornadoes are violent windstorms characterized by a funnel shape and are generated from severe thunderstorms. They can cause significant destruction on land but do not impact the ocean in a way that would create tsunamis. Their formation is unrelated to the geological processes that generate undersea earthquakes.