Himalayas are continental fold mountains which are result of convergent plate boundaries .In early periods there was geosyncline (deep hollow relief ) .Also contribtuion of contitental drift theory ,geosyncline theory and plate tectonics theory explains the birth of himalayas from geosyncline tethyes.Thus himalayas are accumulation of tethys geosyncline.

The correct answer is option A) The Himalayas.

Explanation:
The physiographic division of the Himalayas in India was formed out of accumulations in the Tethys geosyncline. Here is a detailed explanation of this process:

1. Tethys Geosyncline:
The Tethys geosyncline was a long, narrow trough or basin that extended along the northern margin of the Indian plate during the Paleozoic and Mesozoic eras. It was a site of sedimentation and accumulation of marine sediments.

2. Sedimentation in the Tethys Geosyncline:
Over millions of years, sediments from the erosion of the Indian plate and adjacent landmasses accumulated in the Tethys geosyncline. These sediments, which included sand, mud, and organic matter, were deposited layer upon layer.

3. Geological Processes:
As the sediments continued to accumulate, various geological processes began to shape and transform them. These processes include compaction, lithification, and tectonic movements.

4. Compaction and Lithification:
The weight of the overlying sediments caused the lower layers to become compacted. This compaction removed the water and air from the sediments, resulting in the expulsion of water and the consolidation of the sediment layers. This process is known as lithification.

5. Tectonic Movements:
The Indian plate, carrying the sediments accumulated in the Tethys geosyncline, began to collide with the Eurasian plate around 50 million years ago. This collision resulted in intense tectonic forces, including folding, faulting, and uplift.

6. Formation of the Himalayas:
The intense tectonic forces caused the sediments in the Tethys geosyncline to be folded and uplifted. This uplift led to the formation of the Himalayas, which is a young and dynamic mountain range. The Himalayas are characterized by their steep slopes, high peaks, and deep valleys.

In conclusion, the physiographic division of the Himalayas in India was formed out of accumulations in the Tethys geosyncline. The sediments deposited in the geosyncline over millions of years were subjected to compaction, lithification, and tectonic forces, resulting in the formation of the majestic Himalayan mountain range.