Bunuel
While price supports for dairy products will save jobs in the dairy industry, they will also endanger jobs in other food industries. Because price supports will make dairy products more expensive, families will spend a greater portion of their food budgets on dairy products.
The author's argument depends on which of the following premises ?
(A) Most consumers would not prefer lower-priced dairy products to other lower-priced food items.
(B) If dairy price supports are implemented, there will be an increase in the number of jobs in the dairy industry.
(C) Consumers would spend more money on other types of food if there were no dairy price supports.
(D) If price supports for other food products were implemented, sales of those products would decline.
(E) The quantity of dairy products sold will decrease if price supports are implemented.
Price supports will make dairy products more expensive.
Intermediate Conclusion: Families will spend a greater portion of their food budgets on dairy products.
Conclusion: While price supports for dairy products will save jobs in the dairy industry, they will also endanger jobs in other food industries.
What is the author assuming in arriving at the intermediate conclusion?
That families will continue buying the same amount of dairy products. That they will not reduce their consumption of dairy. That if dairy got more expensive, people will cut down on other foods.
Say on average people spend $500 on food every month. Of this they spend $200 on dairy products and rest on others. If dairy became expensive, the author is assuming that people will spend higher than $200 on dairy (they will keep buying the same amount and not adjust to keep dairy expense at $200 only), Say they will start spending $220 on dairy.
Hence will have less money (say $280) for other foods.
Hence the author's assumption is that consumers would spend less money ($280) on other foods if dairy prices are implemented. In other words, consumers would spend more money ($300) on other types of food if there were no dairy price supports.
That is why (C) is the assumption.