The correct option is Meghalaya because this region is home to the indigenous Khasi and Jaintia tribes, who have developed the remarkable practice of cultivating living root bridges using the aerial roots of rubber trees (Ficus elastica). This sustainable technique showcases the harmonious relationship between nature and human ingenuity, reflecting the principles of ecological balance and traditional knowledge that are emphasized in UPSC Prelims GS Paper I, particularly in sections related to environmental sustainability and cultural practices. Additionally, the living root bridges highlight the significance of biodiversity and conservation methods in maintaining local ecosystems.