Explanation:

- Kisan Sabha: This term generally refers to farmer or peasant movements in India, often associated with organizing farmers for their rights and interests. Established in the early 20th century, it has been a significant force in Indian agriculture politics. However, Kisan Sabha was more prominent in northern India during the 1920s and 1930s.

- Kirti Kisan: This was a combination of “Kirti” meaning respected or celebrated and “Kisan” meaning farmer. It is less commonly associated with the peasant movements of the 1930s in Kerala.

- Karshaka Sangam: This is indeed the correct answer. "Karshaka Sangam" literally translates to Farmer's Association in Malayalam, and this term was used in Kerala during the 1930s to mobilize peasants.

- Kisan Morcha: This term is generally associated with contemporary political actions and organizations related to farmer issues, particularly linked with political parties, rather than the 1930s Kerala movements.