A bus is defined in Ontario as any motor vehicle carrying more than how many persons?
Answer: B — 10
The incorrect choices A, C, and D can be eliminated as they do not meet the criteria for a bus in Ontario. A vehicle must carry more than 10 persons to be considered a bus in Ontario, making option B the correct answer. It is important to pay attention to specific definitions or criteria when answering questions related to legal or technical terms, as incorrect choices may seem plausible.