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Out of the given options, option 4, Trinamul Congress, is the political party that has not been recognized as a National Political Party.
Option 1, Indian National Congress, is one of the oldest and most prominent political parties in India and has been recognized as a National Political Party.
Option 2, Bharatiya Janata Party (BJP), is another major political party in India and it has also been recognized as a National Political Party.
Option 3, Bahujan Samaj Party (BSP), is a political party that primarily represents the interests of the Bahujan Samaj, and it has been recognized as a National Political Party.
However, it is important to note that the political landscape in India is dynamic and the recognition of political parties may change over time.