Answer:
B. Digitizer
Step-by-step explanation:
In a laptop screen (basically a touch screen) the digitizer is a component (technically one of the layers) of the screen. The screen contains;
i. the glass panel - This is the outermost layer.
ii. the digitizer - This is located just under the glass panel. It responds to touches.
iii. the LCD panel - This displays the image on the screen.
So replacing the LCD panel in a laptop can damage either the digitizer or the glass panel.