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4. (24257-!-item-!-188;#058001200) Which of the following most logically completes the argument? A new machine for harvesting corn will allow rows to be planted only fifteen inches apart, instead of the usual thirty inches. Corn planted this closely will produce lower yields per plant. Nevertheless, the new machine will allow corn growers to double their profits per acre because __________. (A) with the closer spacing of the rows, the growing corn plants will quickly form a dense canopy of leaves, which will, by shading the ground, minimize the need for costly weed control and irrigation (B) with the closer spacing of the rows, corn plants will be forced to grow taller because of increased competition for sunlight from neighboring corn plants (C) with the larger number of plants growing per acre, more fertilizer will be required (D) with the spacing between rows cut by half, the number of plants grown per acre will almost double (E) with the closer spacing of the rows, the acreage on which corn is planted will be utilized much more intensively than it was before, requiring more frequent fallow years in which corn fields are left unplanted 6. (24353-!-item-!-188;#058001207) Which of the following most logically completes the passage? Garnet and RenCo each provide health care for their employees. Garnet pays for both testing of its employees cholesterol levels and treatment of high cholesterol. This policy saves Garnet money, since high cholesterol left untreated for many years leads to conditions that require very expensive treatment. However, RenCo does not have the same financial incentive to adopt such a policy, because __________. (A) early treatment of high cholesterol does not entirely eliminate the possibility of a stroke later in life (B) the mass media regularly feature stories encouraging people to maintain diets that are low in cholesterol (C) RenCo has significantly more employees than Garnet has (D) RenCos employees are unlikely to have higher chole