The correct answer is Postponement of Non-Co-operation Movement by Gandhiji .

The repetition of revolutionary activities in Indian politics during 1923-28 was due to the postponement of the Non-Cooperation Movement by Mahatma Gandhi.

The Non-Cooperation Movement was a significant phase of India’s freedom struggle, launched in 1920 under the leadership of Mahatma Gandhi. However, in 1922, the movement was suspended after a violent incident in Chauri Chaura. This suspension led to a sense of frustration among the people who had actively participated in the movement.

In 1923, Mahatma Gandhi announced the launch of the Swaraj Party, which aimed to participate in elections and work towards achieving independence through constitutional means. However, many young and radical leaders, including Bhagat Singh, Chandrashekhar Azad, and others, were disillusioned with the Swaraj Party’s approach and continued to advocate for revolutionary activities.

The postponement of the Non-Cooperation Movement and the Swaraj Party’s approach led to a sense of frustration and disillusionment among the youth, who believed that only revolutionary means could achieve independence. The influence of leaders like Hardayal and Lajpat Rai, the influence of foreign events, and the British refusal of Indian demands were all contributing factors to the repetition of revolutionary activities in Indian politics during 1923-28.

In conclusion, the correct answer is option 2 – Postponement of the Non-Cooperation Movement by Mahatma Gandhi.