4. In Figure 1, there are "holes" in the region displayed. What is the most likely reason these "holes" in the vernacular regio-
develop over time?
a. The "holes" only develop due to the migration of people in and out of the region.
b. Vernacular regions are permanent regions, and holes only develop based on the political realignment of the boundaries.
c. Vernacular regions are fluid and shift over time as cultural perceptions change.
O d. "Holes" only develop because of forced bans on specific names of businesses.
