A) From the chart, only category 4 & 5 hurricanes are predicted to have a positive percent change in number, hence, they are the ones expected to strike more frequently in this century.
B) This information cannot be read off from the graph. So, the answer provided isn't from this chart of prediction.
Hurricanes are formed when warm, moist air from the ocean surface begins to rise rapidly, and they encounter cooler air that forces the warm water vapor to condense& form storm clouds with drops of rain.
C) The less powerful hurricanes are predicted to have more than 25% negative percent change in number.
But the most powerful categories of hurricanes are predicted to have more than 75% positive percent change in number.
Although, the true figures aren't clear, but more hurricanes that happen are bound to be classified as category 4 & 5 hurricanes. It can be perceived that hurricanes are getting stronger in this century.
D) This information cannot be read off from this chart. It isn't provided.
E) From the chart, category 1 and category 2 & 3 hurricanes are predicted to drop in frequency by more than 25% this century.
F) From the chart, we're predicted to have more than 75% positive percent increase in the number of category 4 & 5 hurricanes.
The number of category 4 and 5 hurricanes we should expect this century will be more than 75% higher than the previous century.