Which of the following is the best example of a public good?
a. a highway system
b. a shopping mall
c. a country club
d. a movie theater

A public good is something that is provided for the whole society (without additional fees other than general taxes) and the best example is the highway system - the rest is not necessarily available to the whole society and is not necessarily for free.

I've seen hopeful signs that life will get better.

Explanation: It's the only one that has a deeper meaning.