The correct answer is: a) The arrival of spring.
The Phumaniyan dance is a traditional dance of the Tharu people of Nepal. It is performed to celebrate the arrival of spring and the beginning of the agricultural season. The dance is performed by a group of men and women, who wear colorful costumes and masks. The dancers move in a circle, singing and clapping their hands. The dance is a way for the Tharu people to express their joy and gratitude for the coming of spring.
Option b) is incorrect because the Phumaniyan dance does not celebrate victory in battle. The dance is a celebration of the arrival of spring, not a victory in battle.
Option c) is incorrect because the Phumaniyan dance does not celebrate a bountiful harvest. The dance is a celebration of the arrival of spring, not a bountiful harvest.
Option d) is incorrect because the Phumaniyan dance is not a religious festival. The dance is a celebration of the arrival of spring, not a religious festival.