Who among the following Indian musicians is known for his contribution to the field of Hindustani music for the classification of Ragas into ten Thatas?

The correct answer is Pandit Vishnu Narayan Bhatkhande.

Detailed Explanation:

Pandit Vishnu Narayan Bhatkhande (1860–1936) was an eminent Indian musicologist who played a pivotal role in re-organizing and modernizing Hindustani classical music.

One of his most outstanding contributions to Indian music theory was the re-classification of Hindustani Ragas into a coherent system consisting of ten parent scales, known as "Thaat" (or Thatas). Before Bhatkhande's classification, Hindustani music lacked a universally accepted structural system for grouping ragas.

The 10 Thaats introduced by Pt. Bhatkhande are:

1. Bilawal
2. Kalyan
3. Khamaj
4. Bhairav
5. Bhairavi
6. Asavari
7. Todi
8. Poorvi
9. Marwa
10. Kafi

He also authored extensive treatises such as Hindustani Sangeet Paddhati and developed a standardized music notation system that simplified learning and preserving Indian classical compositions.