The overall operating costs of many small farms are reduced when the farmers of small farms eliminate expensive commercial chemical fertilizers and pesticides in favor of crop rotation and the twice-yearly use of manure as fertilizer. Therefore, farmers of large farms should adopt the same measures. They will then realize even greater total savings than do the small farmers.
The argument assumes that
A. it is
more cost-effective for small farm farmers to eliminate the use of commercial fertilizers and pesticides
than it is for large farm farmers to do so - WRONG. Opposite to the passage.
B. a sufficient amount of manure will be available for the fields of large farm farmers - CORRECT. If not then total savings is affected.
C. large farm farmers would not realize similar cost benefits
by using treated sewage sludge instead of commercial chemical fertilizers - WRONG. Irrelevant comparison not necessary for the passage.
D. large farm farmers
generally look to small farm farmers for innovative ways of increasing crop yields or reducing operating costs - WRONG. Not necessarily required for the passage.
E. the smaller the farm, the
more control the farmer has over operating costs - WRONG. Exactly the opposite to what passage says. Trouble for large farms then.
Answer B.