Which of the following is a severe convective weather event that can occur
when a warm moist air mass meets a cold air mass
a bilzzard
b tornado
c dust

B. Tornado.
The cold and hot air swirl around in circles and the air stick together, making it a tornado.

B) Tornado

When the cold air mass meets the warm air mass, they do not want to share the environment. They'll compete. The warm and cold air masses begin to chase each other around and around which forms a tornado.