The correct answer is D. Writing tablet.
A writing tablet is a device for converting handwritten impressions into coded characters & positional coordinates for input to a computer. It is a flat surface that users can write on with a stylus or pen. The tablet then converts the handwriting into digital text or images that can be saved or edited on a computer.
A touch panel is a type of input device that allows users to interact with a computer by touching the screen. A mouse is a small handheld device that is used to control the cursor on a computer screen. A wand is a long, thin device that is used to point at objects on a computer screen.
None of the above options are devices for converting handwritten impressions into coded characters & positional coordinates for input to a computer.