Tornadoes
A)are fairly well understood by scientists.
B)are most intense when spawned from supercells.
C)do not occur in association with squall lines.
D)do not occur in association with tropical cyclones.

Question

Quizplus · Accepted Answer

Tornadoes are most intense when spawned from supercells, which are thunderstorms that have a rotating updraft. While tornadoes can also be spawned from squall lines, they are generally weaker in intensity. Tornadoes can also form in association with tropical cyclones, but this is less common. While tornadoes are not fully understood by scientists, significant progress has been made in recent years in improving tornado forecasting and warning systems.