The correct answer is A) increasing the use of fertilizers and irrigation.
The action that is a way to repair land that has been overfarmed is increasing the use of fertilizers and irrigation.
After a portion of land in the farm fields has damaged or has been overfarmed, one of the feasible solutions to repair the land is increasing the use of fertilizers and irrigation. A fertilizer is something that farmers add to the soil. Fertilizers have nutrients that help the soil to be more fertile and for the plants to grow well. Irrigation is always a necessity for the fields. Water is life, and the combination of correct irrigation and fertilizers can help to repair the land.