The correct answer is: a) Northeast India.
Tribal areas in India are primarily associated with Northeast India. This is because the Northeast region is home to a large number of tribal groups, who have their own unique cultures and languages. The Indian government has designated certain areas in the Northeast as “tribal areas,” which means that these areas have special laws and regulations that are designed to protect the rights of the tribal people who live there.
The other options are incorrect because they do not accurately reflect the distribution of tribal people in India. Central India is home to some tribal groups, but it is not as heavily populated by tribal people as Northeast India. The Southern states and the Himalayan states also have some tribal groups, but they are not as numerous as the tribal groups in Northeast India.
In conclusion, the correct answer to the question “The concept of ‘tribal areas’ in India is primarily associated with:” is a) Northeast India.