Which cultural and musical group celebrated its 10th anniversary in December 2025?

The correct option is Robir Kiran.

Explanation:

Robir Kiran is a well-known cultural and musical organization dedicated to preserving, celebrating, and promoting Rabindra Sangeet as well as Indian cultural heritage. Formed by a collective of passionate musicians and cultural enthusiasts, the group completed a decade of its artistic journey, celebrating its 10th anniversary in December 2025.

Let's look at the options provided:

• Satyajit Ray Society: An organization focused on preserving the legacy and cinematic works of filmmaker Satyajit Ray.

• Kala Mandir: A prominent cultural center and auditorium in Kolkata established much earlier.

• India Panorama: A flagship section of the International Film Festival of India (IFFI) selecting outstanding Indian feature and non-feature films.

• Robir Kiran: The musical and cultural troupe that marked 10 years of foundation in December 2025.