Correct Answer: wheat, rice, maize

Solution : The correct option is - wheat, rice, maize

Wheat, rice, and maize are the three crops that contribute the most to the world's supply of food grains. Most of the grain required by the globe is produced by the three crops described above.  Rice is the primary food crop, and wheat and maize are the next two. Due to the increased demand and requirements of the expanding population, the production of these crops is crucial for ensuring an adequate supply.