Question

3.Which printer has a special coating on it which toner (an ink powder) sticks?

Answer 1

must inkjet paper have a special coating in them to help the paper abserb the right amount of ink

Answer 2

If you're buying a printer for your home or official needs, you either go for purchasing an inkjet printer or Laser printer.

If you plan to purchase the inkjet printer type, it uses the liquid ink to spray on the paper, but the laser printer has the special coating which toner (an ink powder) sticks, so Laser printer is the correct answer.