The correct answer is option 2 which implies that statements 1, 2 and 3 are correct.

Statement 1 is correct because farmers indeed prefer to grow food grains with highly remunerative support prices rather than oilseeds. This encourages the importation of oilseeds due to local scarcity.

Statement 2 is also accurate as the majority of oilseed cultivation in India relies heavily on rainfall. Inconsistent rainfall or any other weather challenges directly affect the yield.

Statement 3 is right to imply that oils from tree-origin seeds and rice bran remain largely unexploited. They could offer potential alternatives to imported oilseeds but are not adequately utilized.

However, Statement 4 is incorrect. It is not necessarily cheaper to import oilseeds than to cultivate them locally. Many factors come into play, including import tariffs, transportation and storage costs, exchange rates, and international market prices, which can make importing more expensive.