In classical conditioning, if the sour taste of lemon juice automatically causes your mouth to pucker, the lemon juice is the and the pucker of lips and tongue is the

The answer is unconditioned stimulus and unconditioned response in which in classical conditioning if the sour taste of lemon juice spontaneously reasons the mouth to pucker the lemon juice is the unconditioned stimulus and the pucker of the lips and tongue is the unconditioned response. In addition, classical conditioning plays a significant role in which the progress of emotional responses such as anxiety or embarrassment.

Ithink it's c selection but i don't really know. 

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.