Explanation:

- Option 1: The Kanpur Conspiracy Case took place in 1924, after the Non-Cooperation Movement, which was suspended in February 1922.

- Option 2: The Jallianwala Bagh Tragedy occurred in 1919, before the start of the Non-Cooperation Movement.

- Option 3: The Khilafat Movement was concurrent with the Non-Cooperation Movement, beginning around 1919-1920, and not strictly post-Non-Cooperation.

- Option 4: The Rowlatt Agitation was a response to the Rowlatt Act of 1919, preceding the Non-Cooperation Movement.