27. Farm productivity can always be improved by a. transforming small plots into larger ones b. encouraging the use of modern equipment c. making sure that each farmer has land in each ecological zone d. encouraging mono-cropping e. none of the above 28. Incentive goods are a. manufactured goods for consumption by farmers b. manufactured inputs for farm production c. agricultural goods that can be sold in the cities d. agricultural goods that are left for consumption in the rural areas e. none of the above 29. Which of the following is n_ot an important contribution of the agricultural sector to overall development: a. increasing national food supplies b. permitting foreign exchange earnings through imports c. allowing excess labor to ow to urban areas d. providing savings for industrial investment e. increasing the demand for manufactured goods f. All of the above are important contributions