Which one of the following is the narrow belt parallel to the Shiwalik

Which one of the following is the narrow belt parallel to the Shiwalik foothills where streams and rivers coming from the mountains deposit heavy materials of rocks and boulders ?

Tarai
Bhangar
Bhabar
Khadar
This question was previously asked in
UPSC NDA-2 – 2023
The narrow belt parallel to the Shiwalik foothills where streams deposit heavy materials like rocks and boulders is known as Bhabar.
Bhabar is characterized by porous and stony soil, and streams disappear underground in this region due to infiltration through the coarse deposits.
South of the Bhabar belt is the Tarai belt, a wet, marshy, and densely forested region where the streams re-emerge. Further south lie the alluvial plains, divided into Bhangar (older alluvium) and Khadar (newer alluvium).