Answer:
The effect that causes Corey's quantity demanded of a frozen dinner to increase is known as income effect
Explanation:
Income effect refers to the change in consumption pattern or in the amount of the good consumed as a result of changes in the consumer's utility and purchasing power. Income effect can be positive or negative.
Here, Corey derives some utility from consuming a frozen dinner (an inferior good). Therefore, as the price increases, the income effect will induce Corey (the consumer) to purchase more.