Athick mass of tough roots called loess kept the fertile soil of the prairies in place and held on to moisture. true or false.

The correct answer is "FALSE".

Explanation:

Loess are sediments  formed by the accumulation of silt that comprise about ten percent of the total Earth's land. Loess are not thick mass of tough roots that kept the fertile soil of the prairies in place and held on to moisture. These thick masses are known as "sod" and are usually comprised of fibrous roots where grass grows.

the correct option is option d

i dont know it at allnow im just getting points at this pint