These questions are all personal therefore no one can answer them correctly except for you.
I would say number "A" is correct. If you read all of them out loud, pausing for each comma/semicolon, you might notice that "A" and "B" sound the most reasonable. It may depend, but I would go with number "A" because the semicolon makes a bit more sense than a comma. It can be tricky to identify the difference sometimes. I hope this helped :)
Answer:
it is al about what happens during/before a tornado
Explanation:
