Question

Which statement presents a sound argument?

Playing video games will rot your brain and make you stupid.
If you wonÍt buy me that game, then donÍt buy me anything.
Everyone we know has the new video game system; we should get one too.
The new video game system is so popular that stores may have trouble keeping them in stock.

Answer 1

The answer would be "The new video game system is so popular that stores may have trouble keeping them in stock"

This statement can be backed up with a fact.

Answer 2

The new video game system is so popular that stores may have trouble keeping them in stock.

It's the only statement that could be logically backed with a fact. Everything else is just an opinion based statement.