Which of the following is a critical rule for determining whether something is a public good?

When the total benefits to society are greater for the society than for the individuals using it.

For example is using environmental friendly cars. The cost of the cars would be far more expensive than the ordinary cars, which is not very good for the individuals using it. But it greatly reduced the pollution in the environment, which bring a great benefit for the society

Bob: coke is baby pandas.jim: what? how do you figure that coke is baby pandas? bob: because this book says so.jim: how do we know the book is correct? bob: because it says that coke is baby pandas.jim: how does that prove the book's accuracy? bob: because it's statement involving coke and baby pandas is correct, therefore it is accurate.jim: how do we know that it's correct? bob: because we have concluded that the book is accurate, and therefore the statement is correct.therefore, coke is baby pandas.