are based on connections. They are organized around a focal point and include the areas linked to the focus through patterns of trade,
communication, and/or transportation routes.
A. Formal regions
B. Physical regions
C. Functional regions
D. Perceptual regions

C. Functional regions.

Formal regions usually refer to entire countries, physical regions refer to the topography of the region, and perceptual regions refer to the perceived culture/history of a region.

Functional regions are also known as nodal points, making the answer choice clear.

Answerbecause of improved transportation, communication, and other advantages;