Most south korean farmers work on
a. large, cooperative farms.
b. farms that are very far from their homes.
c. farms with little or no machinery.
d. small family farms.

Most south korean farmers work on : small family farms

Most of them own a small sized land that they utilized for growing a specific type of farms.
Since most koreans eat 'Kimchi' almost every day (which made using various types of vegetables), a lot of small sized family farms are proven to be profitable within the nation

hope this helps