Concept:National progress requires unity among diverse social and political groups. Political parties must preserve this unity even during elections.
Explanation:Statement (a) is correct. During the Rowlatt Satyagraha (1919), Hindus and Muslims jointly protested the oppressive Rowlatt Act. This showed how cross-community unity strengthens the fight against colonial rule.
Statement (b) is incorrect. From the late 1930s, the Muslim League began calling Muslims a separate "nation", which divided communities and weakened the unity needed for national progress.
Statement (c) is correct. In 1937, the Congress rejected the League's proposal to form a joint government in the United Provinces. This refusal undermined political unity between two major groups, contradicting the assertion that parties should be mindful of unity.
Thus, only options (a) and (c) support the given assertion.
Answer:(c) and (a) — Option C