What weather conditions are most likely to produce tornadoes? Why do tornadoes occur most often in Tornado Alley?
a. Warm, moist air interacting with cold, dry air; Tornado Alley experiences favorable conditions.
b. Cold, dry air interacting with warm, moist air; Tornado Alley is geographically predisposed.
c. Stable atmospheric conditions; Tornado Alley is an anomaly.
d. High-pressure systems; Tornado Alley is a random occurrence.