In his early political life, M. A. Jinnah initiated Hindu-Muslim unity. This means that he took active steps to promote harmony and cooperation between Hindus and Muslims. Jinnah believed in the idea of a united India where both communities can coexist peacefully, and he worked towards this goal. It is important to note that in the later years of his political career, Jinnah shifted his focus and started advocating for the idea of Pakistan, which eventually became an independent state. However, during his early years, he was committed to promoting unity and harmony between Hindus and Muslims, rather than supporting the two-nation theory or advocating for communalism. Therefore, option 2 is the correct answer as it accurately portrays the early political life of M. A. Jinnah.