Residents of Tamil Nadu adapt to the climate by:

Building houses with thick walls and small windows
Wearing light, cotton clothing throughout the year
Using traditional water harvesting techniques
All of the above

The correct answer is: d) All of the above.

Residents of Tamil Nadu adapt to the climate by building houses with thick walls and small windows, wearing light, cotton clothing throughout the year, and using traditional water harvesting techniques.

  • Building houses with thick walls and small windows helps to keep the heat out during the day and the cool air in at night.
  • Wearing light, cotton clothing helps to keep the body cool and comfortable.
  • Using traditional water harvesting techniques helps to collect and store water during the rainy season, which can be used during the dry season.

These adaptations help residents of Tamil Nadu to live comfortably in a hot and humid climate.