Answer:
The correct answers are:
Wheat: The Bajio region of Mexico is known for its wheat production, particularly in the state of Guanajuato.
Corn: Corn is also a principal crop in the Bajio region and is an important staple in the Mexican diet.
Chickpeas: While not as widely grown as wheat and corn, chickpeas are also grown in the Bajio region and are an important source of protein in the local diet.
Cotton: Cotton is not typically considered a principal crop in the Bajio region. The region is known more for its agricultural diversity, with a variety of crops grown depending on local conditions and market demand.
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