Circle the correct answer. Since World War II, there have been increases in productivity in the

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Step 1: Understand the question.u000AThe question asks about the factors that have contributed to in

Circle the correct answer. Since World War II, there have been increases in productivity in the agricultural sector. This trend is due in part to a. the substitution of capital and materials for labor. b. increases in farm size. c. the decline in the numbers of farms. d. all of the above.