What was the primary task of States Reorganization Commission?

The correct answer is Option (1) → To investigate the question of redrawing state boundaries.

Option (1) To investigate the question of redrawing state boundaries. — Correct. The States Reorganisation Commission was appointed in 1953 to look into the question of redrawing of the boundaries of states; it accepted that state boundaries should reflect the boundaries of different languages.

Option (2) To explore if states can be carved out on the basis of demographic indicator of caste — Incorrect. The Commission’s basis was language, not caste.

Option (3) To integrate states according to their religious affiliations. — Incorrect. States were reorganised on the basis of language, not religion.

Option (4) To encourage secessionism. — Incorrect. It was the reverse: linguistic states were expected to reduce the threat of division and separatism.