Linking the Kashmir valley with the Indian Railways Network is an internal infrastructure project within India and does not involve China directly. The other three options are all documented sources of tension between India and China: dam construction on the Brahmaputra affects water flows to India, Dalai Lama's visits to Arunachal Pradesh are contested due to China's territorial claims, and China's practice of stapled visas for Jammu and Kashmir residents challenges India's sovereignty.