Option 1: Arunachal Pradesh -> Shares a border with Myanmar in the northeastern region.
Option 2: Nagaland -> Shares a border with Myanmar along its eastern side.
Option 3: Tripura -> Does NOT share a border with Myanmar; it is surrounded by Bangladesh on three sides.
Option 4: Mizoram -> Shares a border with Myanmar along its eastern and southern boundaries.
Hence, Option 3: Tripura -> The India-Myanmar border runs along four Indian states: Arunachal Pradesh, Nagaland, Manipur, and Mizoram. Tripura, while located in Northeast India, is bordered by Bangladesh and does not touch the Myanmar border -> correct