17: It is crucially important to farmers that the herbicides they
use to control weeds not (?) damage their crops. One very effective
herbicide is safe for corn, but soybeans are damaged even by the
herbicide’s residue, which remains in the soil more than a year
after the herbicide is applied. Soybeans and corn are not sown
together in the same filed; nevertheless, most farmers are
reluctant to use the herbicide on their corn.
Which of the following, if true, provides the strongest
justification for the farmers’ reluctance?
A: The residue of the herbicide in the soil a year after
application is not enough to control most weeds effectively.
B: To maintain the nutrients in the soil, corn and soybeans are
often planted in a field in alternate years.
C: The demand for soybeans is growing faster than is the demand for
corn.
D: For maximum yield, soybean plants are grown closer together to
each other than are corn plants.
E: The application of herbicides is less critical for soybean than
for corn crops.
B? | 
