The Himalayas are formed of parallel fold ranges, of which the oldest range is
- Athe Siwalik Range
- Bthe Lesser Himalayan Range
- Cthe Great Himalayan Range
- Dthe Dhaula Dhar Range
Solution & Step-by-step Explanation
The Himalayas comprise three main parallel structural zones. Among these, the Great Himalayan Range (or Himadri) was formed first during the Eocene-Oligocene epoch, making it the oldest range. The Lesser Himalayas formed next, followed by the Siwalik Range, which is the youngest.