I think it's D because it's made out of facts. The other ones are more likely to include bias.
Answer:
Correctly position the platen of the printer to hold the paper in place.
Explanation:
Since the dot matrix printer is printing dark and clear on the left of the paper but very light on the right side of the paper, it is possible that the paper is not being held properly. So adjusting the platen will hold the paper properly and hence uniform prints on the paper.
Note: Dot matrix printers are printers that print closely related dots to form require texts (shapes) by striking some pins against an ink ribbon.
Some of the parts of these printers are; power supply, carriage assembly, Paper sensor, ribbon, platen and pins.
A copy and paste would be fastest and easiest. As you can pinpoint the exact location to where you want the picture to be.