A Forecast Method That Compares Past Weather Maps and Weather

A probability forecast that calls for a "40 percent chance of rain" means that: A)there is a 40 percent chance that it will not rain within the forecast area. B)there is a 40 percent chance that any random place in the forecast area will receive measurable rain. C)it will rain on 40 percent of the forecast area. D)it will rain during 40 percent of the time over the forecast area.

Which of the following is presently a problem with modern-day weather predictions? A)computer forecast models make assumptions about the atmosphere that are not always correct. B)there are regions of the world where only space observations are available. C)computer models do not always adequately interpret the surface's influence on the weather. D)the distance between grid points on some models is too large to pick up smaller-scale weather features such as thunderstorms. E)all of the above