Explanation:

The Pirpur Report of 1938 was produced by the Muslim League. It was intended to document and highlight the grievances and alleged injustices faced by Muslims under Congress rule in the provinces. The report argued that Muslims were being marginalized and discriminated against in various socio-political aspects, serving as a tool for the Muslim League to push for greater political representation and rights.

- Option 1: Muslim League - Correct, as they were responsible for the production of the Pirpur Report. Correct Answer

- Option 2: Unionist Party - Primarily a political party based in Punjab, not associated with the report.

- Option 3: Ahrar Party - Another political entity, but not linked to the Pirpur Report.

- Option 4: Indian National Congress - The primary target of the criticisms in the report, not its producers.