Question

the ___ region has 5 geographic subsections. more people live in this region than any antonio, austin, and corpus christi. central plains post oak belt great plains coastal plains mountains and basins

Explanation:

The Coastal Plains region in Texas is known to have a high - population density and has 5 geographic subsections. Cities like San Antonio, Austin, and Corpus Christi are in or near the Coastal Plains. It is the most populous region among the options given.

Answer:

D. Coastal Plains