Suitable for farming A mountain rang B rural C arable D smog

Arable land is the most suitable for farming.

Explanation:

Arable land consists of nutritious soil capable enough of hosting a variety of crops, depending upon the climatic conditions of the region. Arable land is easily ploughable and other agricultural activities like sowing and weeding can be done here with ease. This kind of land possesses a good moisture-holding capacity which allows the farmers to take crops all throughout the year based upon seasons and suitability.

depends on the plant, most likley C