Answer:
C. There are more substitutes for Cheerios than for cereals as a whole
Explanation:
Since in the question it is given that the demand for Cheerios cereal is more price-elastic than the demand for cereals as a whole as because there are more substitutes for Cheerios as compare to cereals because in the case of substitute goods, there is a positive relationship between the price of good B and the demand of good A. It means if the price of good B decline. then the demand of good A is decreases and vice versa
