In which Indian Union Territory is the folk dance Kummi traditionally performed?

The correct option is Puducherry.

Detailed Explanation:
Kummi is a traditional folk dance that originated in Tamil Nadu and is widely performed across the southern region of India, including the Union Territory of Puducherry and parts of Kerala.

Key features of the Kummi dance include:
1. Performance Style: It is performed predominantly by women standing in a circular formation.
2. Rhythm and Music: Unlike many other folk dances, Kummi relies primarily on the rhythmic clapping of hands by the dancers to create the beat, often without any musical instruments.
3. Occasions: It is traditionally performed during major festivals such as Pongal, temple fairs, and harvest celebrations to express joy and unity.

Overview of Folk Dances in Other Options:
• Himachal Pradesh: Famous for dances such as Nati, Dhaman, and Chharhi.
• Punjab: Famous for Bhangra (men) and Giddha (women).
• Sikkim: Known for dances like Singhi Chham (Snow Lion Dance) and Maruni.

Therefore, among the given choices, Kummi is traditionally performed in the Union Territory of Puducherry.