The correct answer is: c) Myanmar.
Nagaland is a state in northeastern India. It is bordered by the states of Assam and Arunachal Pradesh to the west, Manipur to the south, and the country of Myanmar to the east.
Bangladesh is a country in South Asia. It is bordered by India to the west, north, and east, and Myanmar to the southeast.
China is a country in East Asia. It is bordered by North Korea to the northeast, Russia and Mongolia to the north, Kazakhstan, Kyrgyzstan, and Tajikistan to the west, Afghanistan and Pakistan to the southwest, India, Nepal, and Bhutan to the south, and Myanmar and Laos to the southeast.
Bhutan is a country in South Asia. It is bordered by China to the north and India to the south, east, and west.