A region based on connections such as trade or communication is called a. A. perceptual region
B. functional region
C. formal region
D. physical region

B. Functional Region

Explanation:

Functional regions have boundaries related to a practical function within a given area. When the function of an area ends, the functional region ends and its boundaries cease to exist. For example, a functional region can be defined by a newspaper service or delivery area. If the newspaper goes bankrupt, the functional region no longer exists. Church parishes, shopping malls, and business service areas are other examples of functional regions. They function to serve a region and may have established boundaries for limits of the area to which they will provide service. An example of a common service area—that is, a functional region—is the region to which a local pizza shop will deliver. A functional region is a region that serves a function. Places within in an area are linked together through a common factor. For example, a city and its surrounding suburbs creates a functional region. People generally move to the suburbs if they have a job in the city.