Read the passage and answer the following question :
The significance of the first phase for the party system in India is that almost all political parties or their antecedent organizations can be traced back to the freedom movement in India. The Indian National Congress (INC) founded in 1885 was of course, the aggregation of the crucible for practically all political parties that came to be formed since the last quarter of the nineteenth century to the middle of the twentieth century. The Congress was, in fact, first formed as a pressure group for lobbying support for participation of Indians in British Indian administration and governance. It gradually acquired the role of a mass movement beginning with the partition of Bengal in 1905 and the Swadeshi movement to annul it and especially since the 1920s with the advent of Gandhi on the Indian national scene in the wake of the Jalianwala Bagh massacre in Amritsar. The Congress in reality was a national platform with which all other political organizations of the period had cooperative or conflictual relationships at various points in time. Even the Muslim League and the Scheduled Castes Federation had periods of reconciliation and pacts with this organization of central importance in British India, to say nothing of the Communists, Socialists, Hindu Mahasabha and Akali Dal who had more of cooperative interaction with Congress than conflictual during the freedom struggle. It is for these reasons that this phase of party system growth in India may be appropriately characterized as the "Movement Party System".

Why was the Indian National Congress referred to as a national platform during the British rule?
(1) Because the Muslim League and the Scheduled Castes Federation had periods of reconciliation among themselves.
(2) Because all the other political organizations during the period had cooperated with Congress or also at times had a conflictual relationship with it.
(3) Because Indian National Congress was the only party during this period
(4) Except Congress no other political parties participated in the freedom movement

2

The Indian National Congress was referred to as a national platform during the British rule because all the other political organizations during the period had cooperated with Congress or also at times had a conflictual relationship with it.

Explanation: The passage mentions that various other political organizations of the period had cooperative or conflictual relationships with the Indian National Congress. This made the Congress a national platform with which other political organizations interacted at different points in time.