No zones are: a. areas of the road drivers must avoid when a truck is turning b. areas of the road where large trucks can't drive c. ramps to trucks slow down when their brakes fail d. the blind spots around a large truck

The answer would be d! The no zones are the danger zones around buses and large trucks! (aka blind spots)

5th to stop bare arms 

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.