The United Front was a coalition of 13 political parties that was in power in India during 1996-97. The question asks us to identify the parties that were not a part of this coalition.

Option 1 mentions all the parties, this is incorrect as Asom Gana Parishad (AGP) was a member of the United Front.

Option 2 suggests that the Bahujan Samaj Party (BSP), Samata Party, and Haryana Vikas Party were not part of the United Front, which is correct. Hence, this is the correct option.

Option 3 suggests that the Haryana Vikas Party and AGP were not part of the Front. This is incorrect because AGP was a part of the United Front.

Option 4 implies that the BSP and Samata Party weren`t part of the coalition. This is partially correct because while BSP was not a part of it, other parties are not included which were as well not a part of the front. Hence, not a fully correct answer.