The top three producers of agriculture in the world are
a. japan, africa, and the united states
b. japan, england, and china
c. china, india, and the united states
d. india, england, and the united states.

Between the options presented the best option will be c. China, India, and the United States.

The three countries varies in which top agriculture products they produce and export, lets take a look in each country:

China leads in rice production and Cereal production based in the FAO statistics. And also one of the top producer in milk, chicken and beef.

United States come in second, also in cereal productivity, but is first in coarse grain. They appear in third in wheat production, and it is the top producer in milk, chicken and beef, and second producer of pork.

India comes in third. The Asian country comes as second largest producer of milk, rice and fruits. The country is the leader producer of fibre crop.

i believe it was ccc - civilian conservation corps