You are researching the following question: what causes tornadoes? Choose the best query to use when searching for your answer.

A: causes NOT tornadoes
B: tornadoes OR causes
C: “tornado causes”
D: causes-tornadoes

C: "tornado causes"

The best query to use when searching for the answer to "what causes tornadoes?" would be option C: "tornado causes".

The best query to use when researching the question "what causes tornadoes?" would be option C: "tornado causes." This query is specific and focuses directly on the topic of tornadoes and their causes. By using quotation marks around the phrase "tornado causes," you can ensure that the search results will include this exact phrase rather than unrelated information. This will help you find more relevant and reliable sources of information about the causes of tornadoes.