With unemployed resources the country is likely at point:

While this choice correctly indicates that quantity decreases with falling demand, it inaccurately suggests that price also decreases. In cases of reduced demand, prices usually decline, but the wording here does not specify that price and quantity both decrease, making it an incomplete representation of the situation.

This choice accurately reflects the scenario: as demand decreases due to trends like low-carb diets, both the price and the quantity of high-carb foods decline in equilibrium. The decrease in demand leads to lower prices as suppliers adjust to the lower quantity demanded, hence this is the correct answer.

This option implies that the equilibrium price and quantity remain unchanged in response to a decrease in demand. However, a significant shift in consumer preferences, such as the rise of low-carb diets, would not leave the market unchanged. Thus, this choice contradicts fundamental principles of supply and demand.