The correct answer is: d) The imposition of Hindi.
The Jai Andhra movement was a political movement that sought to create a separate state of Andhra Pradesh out of the Telugu-speaking areas of the Indian state of Madras. The movement was launched in 1969 by Potti Sriramulu, who went on a hunger strike to death in support of the demand. The movement was successful, and Andhra Pradesh was created in 1956.
The imposition of Hindi was one of the main grievances of the Jai Andhra movement. Hindi was the official language of India, and the central government was trying to impose it on all states. The Telugu people felt that this was an attempt to suppress their culture and language.
The other options are not correct. The Telangana movement was a movement for the creation of a separate state of Telangana out of the Telugu-speaking areas of the Indian state of Andhra Pradesh. Naxalite activities are a form of left-wing extremism that is active in some parts of India. Border disputes with neighboring states are a common problem in India, but they were not a major factor in the Jai Andhra movement.