Answer:
B.flat land and access to underground aquifers
Explanation:
Great Plains region of Texas is one of the best farmland in the world because it has flat land and access to underground aquifers.
Great Plains region of Texas has flatlands that rise gently from east to west and low rainfall keeps the area dry. For such landscape, farmers grow crops that require less water and utilizes underground aquifers. The major crops grown by a farmer in Great Plains region of Texa are wheat, soybeans, barley, corn, sorghum, and cotton.
Hence, the correct answer is "B.flat land and access to underground aquifers".
