Which crops are most associated with grain farming, and in what regions is it common?

• A. Wheat and maize grown in temperate to continental zones, notably the U.S. Great Plains, southern Canada, Eastern Europe, and parts of Asia.
• B. Rice and millet grown in deserts.
• C. Fruits and vegetables in coastal zones.
• D. Cotton and sugarcane in tropical climates.

Answer: (A)

Grain farming focuses on growing staple cereal crops such as wheat and maize in climates that support long growing seasons and reliable yields. Temperate to continental zones provide the cool winters and warm summers, plus the flat, fertile lands that are ideal for large-scale, mechanized production. That combination is why the regions described—the U.S. Great Plains, southern Canada, Eastern Europe, and parts of Asia—are classic centers of grain farming, where extensive fields and favorable soils support major wheat and maize harvests.

Desert environments aren’t suited for major grain farming, even for drought-tolerant crops like millet, because the water and soil conditions aren’t reliable. Fruits and vegetables in coastal zones reflect horticultural farming rather than grain production. Cotton and sugarcane in tropical climates are fiber and sugar crops, not cereals. So wheat and maize in temperate to continental zones best fit the concept of grain farming.