Correct Response: B. The student can only read a portion of the text on the screen at one time. This makes it necessary to scroll in order to read the entire page. A is incorrect because a screen magnifier is an included accessibility feature of most devices free of cost. C is incorrect because embedded rasterizing algorithms assure that text is sharply displayed regardless of magnification. D is incorrect because screen magnification includes magnification of the entire selected portion, including the mouse pointer. Additionally, another common accessibility feature is mouse pointer magnification for the entire screen.