Answer: B. on the desk
Ron should place the laptop on the desk while chatting online
Step-by-step explanation:
The laptop can be placed anywhere but he needs to keep focus on the posture with which he work. Because, the extensive use of technology badly affects the health of human.
So it is not that we shouldn’t use technology but there are certain precautious methods which if the human follows can lead healthy life with technology. A laptop is better to be kept on the desk rather than lap, pillow or sofa.
Desk keeps his posture correct provided the seating arrangement and the height of the person and the desk matches.