Explanation:

- United Bank of India was a nationalized bank. However, it merged with Punjab National Bank in 2020.

- State Bank of India was not technically "nationalized" but was transformed into a public sector bank in 1955 through an act of Parliament. It is not part of the banks nationalized in 1969 or 1980.

- Punjab National Bank, on the other hand, was nationalized in 1969, making it one of India's largest public sector banks.

- Punjab and Sind Bank was also nationalized in 1980, and it continues to operate as a public sector bank.

Correct Answer: State Bank of India (Option 2) is NOT a nationalized bank in the traditional sense.