Which of the following dynasties is not related to the southern part of India?

Among the options listed, the Chauhan Rajvansh (Chauhan Dynasty) is not related to the southern part of India. The Chauhan dynasty was a prominent Rajput dynasty that ruled parts of northern India, particularly in the regions of Rajasthan and Delhi. The other dynasties mentioned—Cher (if you mean the Chera), Pandya, and Chola—are all historically significant dynasties from the southern part of India, specifically within the region of Tamil Nadu and surrounding areas.