Ekaharya is the solo artist in which Indian classical dance form?

Correct option is B

Bharatanatyam
 Bharatnatyam dance is known to be ekaharya, where one dancer takes on many roles in a single performance.
 Bharatanatyam is an Indian classical dance form that originated in Tamil Nadu. It is one of eight Indian classical dance forms recognized by the Sangeet Natak Akademi, and expresses South Indian religious themes and spiritual ideas, particularly of Shaivism and in general of Hinduism.
 Kathak is the classical dance form from Uttar Pradesh.
 Kuchipudi is one of the eight major Indian classical dances. It originates from a village named Kuchipudi in the Indian state of Andhra Pradesh.
 Mohiniyattam is an Indian classical dance form that developed and remained popular in the state of Kerala. Kathakali is another classical dance form of Kerala.