After a plague of locusts attacked every crop in Baker County, Kevin Kevinson claimed that the severity of damage to his crops was due to the fish-based fertilizer he applied to his fields before planting.
Which of the following investigation is most likely to yield significant information that would help evaluate Kevin’s argument?
A. Comparing the value of Kevin’s crop damage to the average value of the crop damage at farms where fish-based fertilizer was not applied to the fields before planting
B. Determining the extent to which fish-based fertilizer increases crop yield
C. Comparing the long-term effects of Kevin’s crop damage to the long-term effects of other crop damage in Baker County
D. Comparing the severity of crop damage at Kevin’s farm with the crop damage at agriculturally similar Baker County farms where fish-based fertilizer was not applied to fields before planting
E. Determining the percentage of Baker County farms that applied fish-based fertilizer to their fields before planting