Answer:
Geographic segmentation.
Explanation:
Geographic segmentation is when a business groups it's clients based on their location or when consumers have preferences on the basis of where they are located. Grouping is done by country, state, region, city, and so on.
For example luxury cars can target urban area for sale of their cars, as they will not do well in rural areas.
In this instance research showed that consumers in the West and the Southwest like spicier foods than those in the Southeast and East. So Campbell's makes a hotter nacho cheese sauce for its western and southwestern customers.