Prairie soils (mollisols) are
a.
poor in organic matter
b.
easy to cultivate and fertile
c.
poor in mineral nutrients
d.
difficult to cultivate but fertile

Correct B). Easy to cultivate and fertile

The prairie is grassland soils that possess a dark colored surface and these soil are highly fertile in nature. These soils are rich in minerals like calcium and magnesium.

The dark color of soil comes from the added organic matter to the soil that comes from the roots of prairie plants. They are formed in the areas that are too dry to be forested, but too wet to be desert.

Hence, the correct answer would be option B.