Option 1 includes Kerala-Tapioca, Maharashtra-Cotton, and W. Bengal-Jute. But it omits Gujarat-Groundnut, which is correct, thus it is not the right answer.
Option 2 includes Kerala-Tapioca, Maharashtra-Cotton, and Gujarat-Groundnut. However, it neglects W. Bengal-Jute, which is an essential crop of W. Bengal, so it is incorrect.
Option 3 chooses Kerala-Tapioca, W. Bengal-Jute, and Gujarat-Groundnut. It neglects Maharashtra-Cotton. Cotton is a major crop in Maharashtra, making this choice incorrect.
Option 4 selects Maharashtra-Cotton, W. Bengal-Jute, and Gujarat-Groundnut. All these crop-state pairs are rightly matched, hence Option 4 is the correct answer as it contains correct and complete information about the major crops of these states.