1) The correct answer is B, 2017 Hurricane Harvey. This is because, in August a tropical phenomenon was investigated. It was expected that this, in favorable weather conditions, would merge with the low pressure area of Cape Verde. But both disturbances remained separate and that was the beginning. This is unlike the other events in which maybe the weather was not the only reason. It is also the first meteorological phenomenon of this type that arrives in the United States
2) The correct answer is C, 2013. This is because, if we see the graph we can observe the line in decline in this years, even compared to the others.
3) Actually, it depends on the scenario. But I would say the answer is B, because of the mayority that considers it will be a high level.