The correct answer is Option 2- The Palas, The Pratiharas and The Rashtrakutas

The Tripartite Struggle, also known as the Kannauj Triangle Wars, took place in the 8th and 9th centuries, between the three great Indian dynasties of the Palas, the Pratiharas, and the Rashtrakutas.

The Paramars, the Chauhans, and the Gahadavalas were all important dynasties in Indian history, but they were not involved in the Tripartite Struggle. The Pandyas and the Cholas were dynasties in South India, while the Tripartite Struggle was fought in North India.

The Tripartite Struggle was fought for control of the city of Kannauj, which was strategically located on the Ganges River. Kannauj was also a wealthy and prosperous city, and it was seen as a symbol of prestige and power.

The Tripartite Struggle ended in a stalemate, with no one dynasty able to gain complete control of Kannauj. However, the struggle weakened all three dynasties, and it paved the way for the rise of new powers in India.