Anybody who gets the right answer gets brainliest answer and 99 points!
why do so many tornadoes occur in tornado alley

a. this is where cool dry air at lower levels meet up with higher, cool, moist air
b. this is where warm dry air at lower levels meets up with lower cool moist air
c. this is where cool moist air in the lower levels meet up with higher warm dry air
d. this is where low level warm moist air meet with high cool dry air