Every year, a given college provides Wi$-$fi internet access for students who can show they've paid their tuition and fees each semester. The Wi$-$fi is excellent; in fact, even if all students in the whole school logged on and uploaded or downloaded as much as they could in a given time, there would be no reduction in its performance.

The Wi$-$fi$,$ as described, is

a private good

a public good

a club good

a common resource