The correct answer is option 'C' - the Gandhi-Das Pact took place in 1924. Let's explore the details of this significant event in Indian history.

The Background:
- The Non-Cooperation Movement, led by Mahatma Gandhi, was launched in 1920 as a peaceful protest against British rule in India.
- The movement gained massive support from the Indian population and led to widespread civil disobedience and boycotts of British institutions.
- However, the movement was suspended in February 1922 following the Chauri Chaura incident, where a group of protesters turned violent and attacked a police station, resulting in the death of several police officers.

The Gandhi-Das Pact:
- After the suspension of the Non-Cooperation Movement, Mahatma Gandhi entered into negotiations with the British government.
- The Gandhi-Das Pact was a result of these negotiations and was signed between Mahatma Gandhi and the British-appointed Governor of Bengal, Lord Lytton, on March 5, 1924.
- The agreement was named after Mahatma Gandhi and C.R. Das, a prominent Indian leader and lawyer who played a crucial role in the negotiations.
- The pact aimed to address the issues that had led to the suspension of the Non-Cooperation Movement and find a peaceful resolution.

Key Points of the Pact:
- The most significant outcome of the Gandhi-Das Pact was the release of political prisoners who had been arrested during the Non-Cooperation Movement, including Mahatma Gandhi himself.
- The pact also allowed for the resumption of the Khilafat Movement, which had been closely associated with the Non-Cooperation Movement.
- In return, Mahatma Gandhi agreed to suspend the civil disobedience movement and cooperate with the British government.
- The pact emphasized the importance of Hindu-Muslim unity and aimed to address communal tensions that had arisen during the Non-Cooperation Movement.
- It also called for a reduction in land revenue and taxes to alleviate the burden on Indian peasants.

Impact and Significance:
- The Gandhi-Das Pact marked a significant turning point in the Indian independence movement. It demonstrated Mahatma Gandhi's ability to negotiate with the British government and seek a peaceful resolution.
- It also provided a temporary respite from the intense political tensions in the country and helped rebuild trust between the Indian leaders and the British authorities.
- However, the pact was criticized by some sections of the Indian National Congress and other political organizations who felt that it compromised the principles of the Non-Cooperation Movement.

In conclusion, the Gandhi-Das Pact took place in 1924 and played a crucial role in the Indian independence movement. It led to the release of political prisoners, the resumption of the Khilafat Movement, and addressed communal tensions. While it had a significant impact, it also faced criticism from some quarters.