|Question 9Verbal

Source Texts

Text
Eduardo Martinez 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 winter wheat. But some studies of other crops have found the opposite effect, raising the question of whether the increase in yield found by Martinez 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?
Igor Bogunovic and colleagues reported an even larger positive effect of tilling on the yield of maize.
A
a study using winter wheat yielded 4,829 kilograms per hectare with tilling and only 2,894 kilograms per hectare without tilling.
B
Fuseini Issaka and colleagues found a similar association in a study using rice.
C
crop yields with tilling have ranged from 1,676 kilograms per hectare for spring barley to 6,400 kilograms per hectare for rice.
D