|Question 11Verbal

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Laila Nazirah and colleagues found that tilling—the practice of turning soil with hoes, plows, or other machines before planting crops—was associated with an increased yield of rice. But some studies of other crops have found the opposite effect, raising the question of whether the increase in yield found by Nazirah and colleagues is specific to their study crop. However, this doesn't seem to be the case: ______
Which choice most effectively uses data from the table to complete the assertion?
Salem Alhajj Ali and colleagues reported an even larger positive effect of tilling on the yield of winter wheat.
A
a study using rice yielded 4,370 kilograms per hectare with tilling and only 2,450 kilograms per hectare without tilling.
B
crop yields with tilling have ranged from 3,078 kilograms per hectare for maize to 4,370 kilograms per hectare for rice.
C
G.F. Botta and colleagues found a similar association in a study using soybeans.
D