4. Which of the following presents an analysis of how people in a given region have adapted to their physical environment?

a. People from the frozen tundra regions of Russia & Canada grow grain crops using irrigation & windmills to pump water.
b. Due to a lack of water for drinking, people in SW Asia have developed methods of desalination of seawater as a fresh water source.
c. People in N. Africa often construct houses of wood, stone, & brick as a way to use building materials that naturally occur in their environment.
d. People in North America have created dams to generate electricity for nearby cities.

Option C, People in N. Africa often construct houses of wood, stone, & brick as a way to use building materials that naturally occur in their environment.

Explanation:

Adapting to physical environment means that an individual is able to use locally available resources for making itself fit for survival in the given environment.

North African people are using only local materials for building houses in which they can live and protect themselves from adverse climatic condition.

Hence, option C is correct