Hi there! The answer is B. Driest.
The great plains is a region in the centre of the US and is (mostly) located low. It spreads from the northern to southern US, and therefore knows hot and cold places. Most of the Great Plains is a prairie field, and therefore it is a dry area. B. is correct.
I would say that it would have to be Libya
The Philippines is at high risk from cyclones, earthquakes, floods, landslides, tsunamis, volcanic eruptions, and wildfires.
I would need a picture to help you
Storm-producing storms can be formed on plains or mountainous areas, depending on where the two different temperatures / humidity meet to form thunder clouds. In the United States, the dry line or the place where the moist winds move north into the spring and summer of the Gulf of Mexico, find the driest, driest winds moving to southern Canada on the Central Plains, which is why most US tornado storms come from flat plains.