The correct answer is: a) Assam, Manipur, and Tripura.
Mizoram is a state in northeastern India. It is bordered by Assam to the north, Manipur to the east, Tripura to the south, and Bangladesh to the west. The state has a population of over 1.1 million people and its capital is Aizawl.
Assam is a state in northeastern India. It is bordered by Bhutan to the north, Arunachal Pradesh to the northeast, Nagaland to the east, Manipur to the south, Mizoram to the southwest, Tripura to the west, and West Bengal to the south. The state has a population of over 31 million people and its capital is Guwahati.
Manipur is a state in northeastern India. It is bordered by Nagaland to the north, Assam to the east, Mizoram to the south, and Myanmar to the west. The state has a population of over 2.8 million people and its capital is Imphal.
Tripura is a state in northeastern India. It is bordered by Bangladesh to the west, Mizoram to the south, Assam to the north, and Manipur to the east. The state has a population of over 3.9 million people and its capital is Agartala.
Nagaland is a state in northeastern India. It is bordered by Assam to the north, Manipur to the east, Mizoram to the south, and Myanmar to the west. The state has a population of over 1.9 million people and its capital is Kohima.
Meghalaya is a state in northeastern India. It is bordered by Assam to the north, Bangladesh to the east, Tripura to the south, and West Bengal to the west. The state has a population of over 3 million people and its capital is Shillong.
Gujarat is a state in western India. It is bordered by Rajasthan to the north, Madhya Pradesh to the east, Maharashtra to the south, and the Arabian Sea to the west. The state has a population of over 60 million people and its capital is Gandhinagar.
Odisha is a state in eastern India. It is bordered by Jharkhand to the north, Chhattisgarh to the northeast, Andhra Pradesh to the east, Telangana to the southeast, and West Bengal to the south. The state has a population of over 45 million people and its capital is Bhubaneswar.
Chhattisgarh is a state in central India. It is bordered by Madhya Pradesh to the north, Maharashtra to the east, Odisha to the southeast, Andhra Pradesh to the south, Telangana to the southwest, and Jharkhand to the west. The state has a population of over 29 million people and its capital is Raipur.
Jharkhand is a state in eastern India. It is bordered by Uttar Pradesh to the north, Bihar to the east, Odisha to the south, Chhattisgarh to the southwest, and West Bengal to the west. The state has a population of over 34 million people and its capital is Ranchi.