The correct answer is: A) Abolish landlordism.
The first land reform legislation in Kerala was the Land Reforms Act of 1957. The Act aimed to abolish landlordism and redistribute land to the tillers. It also imposed a ceiling on the amount of land that a person could own. The Act was a major step in the social and economic transformation of Kerala.
Option B is incorrect because the Land Reforms Act did not impose land ceilings. Instead, it imposed a ceiling on the amount of land that a person could own.
Option C is incorrect because the Land Reforms Act did not promote collective farming. Instead, it aimed to redistribute land to the tillers so that they could own and cultivate their own land.
Option D is incorrect because the Land Reforms Act did not protect Adivasi land rights. Instead, it aimed to redistribute land to all landless people, regardless of their caste or tribe.