For this case, the first thing we will do is define the following functions: Function orange = D (x) Blue function = D1 (x) Let's see how one function varies with respect to the other: D1 (x) = D (x) - 2.5 Therefore, we see that the function decreases. Answer: B. A decrease in demand
The answer to your question is that it describes the decrease in demand. So option letter B is correct. Letter D is incorrect because it is obvious in the title of thw graph which is only a quantity demanded.
