There are many agricultural regions in North America where the growing season is long enough to allow pumpkin production well into autumn with no risk of frost. Nonetheless, pumpkin production in North America is concentrated in regions with long, cold winters, where the growing season is delayed and pumpkin crops are exposed to risk of damage or destruction by early autumn frosts.
Which one of the following, if true, most helps to resolve the apparent discrepancy in the information above?The “discrepancy” is: why concentrate production in riskier, short season, early frost areas when safer long season areas exist? The best resolution gives a compensating advantage of the cold winter regions that outweighs the frost risk.
(A) Pumpkins are usually grown to reach maturity in autumn.
This does not explain why production is concentrated in cold winter regions. Pumpkins reaching maturity in autumn can happen in both kinds of regions.
(B) Pumpkins depend on bees for pollination, and bees are active only in warm weather.
This actually favors long growing seasons, not cold winter regions, so it does not resolve the discrepancy.
(C) More pumpkins are sold to consumers in regions of North America with long growing seasons than to those in regions with short growing seasons.
This suggests demand is higher in long season regions, which again would not explain why production is concentrated elsewhere.
(D) Prolonged cold temperatures kill soil-borne fungus and other sources of disease that would kill or seriously damage pumpkins.
This gives a strong advantage of cold winter regions: fewer diseases, higher yields, less loss overall. That can make those regions better for production even if there is some frost risk.
(E) Most of the pumpkin seed used by growers in North America is produced in areas where the growing season is long, and plants used for seed production are protected in greenhouses.
Seed production details do not explain where pumpkin production is concentrated.
Answer: (D)