Tom: "Have you tried that new online game, 'Cyber Quest'? It's amazing! The graphics are incredible, and you can play with people from all over the world."
Sarah: "Oh, I saw an ad for it! I heard it has really challenging levels. I might download it tonight."
Tom: "You should! It's super addictive and a great way to pass the time."
What are Tom and Sarah mainly talking about?
A) A new type of computer.
B) Their favorite websites.
C) A popular online game.
D) The best way to study online.