Answer :
Farming in mountainous areas is so difficult because the soil quality of this land is very poor. The mountainous areas are cut in flat surfaces or platforms, almost resembling the structure of stairs.
Answer: b. rugged landscape of mountainous land.
The reason why farming is so difficult in montainous areas is the rugged landscape of mountainous land. This means that the land is difficult to irrigate, and that surface runoff is very high. Moreover, the erosion of the land is a big problem. A solution that farmers have come up with is that of terracing. Terracing is the creation of flat land on mountains, in a way that resembles a set of stairs. Terracing addresses these problems and facilitates agriculture in these rugged areas.