Which type of character conflict would you most likely find in a story entitled tom's triumph over tornado alley? a. character vs. self b. character vs. character

I believe the correct answer is character vs. nature.
Tornado Alley refers to a place in America, where tornadoes quite frequently happen. So, if this character is going to win in a 'battle' against a location, it is a conflict with nature. It is not within himself, or with another character, or with the entire society, but rather with a place, which belongs in nature.

Not b or c so that leaves you with a or d. a is the better choice.