A survey indicated that almost 50 percent of hockey fans were female. Based on this result, the National Hockey League redirected its marketing efforts. This is an example of segmentation.

Demographic segmentation

Explanation:

Segmentation of market according to the family size, ethnicity, race, income and education is called demographic segmentation.  Organisations often segment the demography into various markets as it helps them to target the consumers with accuracy and as per their needs.  The main benefit of this segmentation is that the information required by the organisation  is available in census.  

answer; when one group has an extremely high score at pretest;

your answer would b. the missisipi river

hope i you : )