All of the examples listed below, with one exception, are public goods which at times might possibly lose some of their public good properties due to congestion. Which example is an exception?

Question

Quizplus · Accepted Answer

Discoveries made through medical research are non-rivalrous and non-excludable, meaning their use by one person does not reduce their availability to others, and no one can be effectively excluded from their benefits. They do not suffer from congestion in the same way physical services or goods might, such as hospitals or insurance, where increased demand can lead to overcrowding or resource limitations.

All of the Examples Listed Below, with One Exception, Are