Explanation:

- Dr. Sunanda Nair is highly esteemed in the field of Indian classical dance.

- She is a renowned performer, teacher, and proponent of one specific dance form.

- Let's delve into the options:

- Option 1: Kathakali - This is a classical Indian dance-drama from Kerala, often involving elaborate makeup and costumes. It's not her primary focus.

- Option 2: Kathak - Originating from North India, this dance form is known for its intricate footwork. Dr. Nair is not primarily known for Kathak.

- Option 3: Kuchipudi - This dance-drama is from Andhra Pradesh. While popular, it's not her main expertise.

- Option 4: Mohiniyattam - ?? This classical dance emphasizes feminine grace and storytelling. Dr. Sunanda Nair is prominently recognized for this art form.