Final answer:
Tornadoes are associated with severe thunderstorms, where different wind speeds and temperature layers in the atmosphere can cause a rotating column of air to turn into a tornado.
The correct option is C.
Step-by-step explanation:
The event associated with tornadoes is C) A severe thunderstorm. Tornadoes are formed from severe thunderstorms called supercells. These supercells contain a column of air rotating around a horizontal axis.
The severe thunderstorms that produce tornadoes often form when there is a significant difference in wind speeds at different altitudes, with strong cold winds high in the atmosphere and weaker winds near the ground. This causes the rotating column of air to reorient, creating the characteristic spinning motion of a tornado.
The correct option is C.