India is one of the founding members of the International North- South Transport Corridor (INSTC), a multimodal a transportation corridor, which will connect

1. A

   India to Central Asia to Europe via Iran

   India to Central Asia to Europe via Iran. That is the INSTC spine: India–Iran (Chabahar)–Caspian–Russia–Europe.

2. B

   India to Central Asia via China

   Via China. INSTC is not a China land bridge.

3. C

   India to South-East Asia through Bangladesh and Myanmar

   Bangladesh–Myanmar. That is a Bay of Bengal / IMT neighbourhood, not INSTC.

4. D

   India to Europe through Azerbaijan

   Europe through Azerbaijan as the only path. Azerbaijan is on a branch; the official description is the Iran corridor.

Summary. Official Set A key is (a). The International North-South Transport Corridor links India to Central Asia and Europe via Iran (Chabahar / Bandar Abbas), the Caspian, and Russia. China and the Bangladesh–Myanmar land route are other corridors. INSTC’s founding map is the Iran route.