Which sentence contains an example clue that the reader understand the meaning of “frugal”?

we were very frugal, very careful to save our money and not to spend too much.
our frugal lifestyle included clipping coupons and waiting for sales before shopping.
raised to be economical with the money we earned, we all went on to lead frugal lives.
our friends spent whatever they earned wastefully, but we were frugal with our salaries.

The sentence that contains an example that helps the reader understand the meaning of "frugal" is:

Our frugal lifestyle included clipping coupons and waiting for sales before shopping.

In this sentence there is not such thing as a definition or a synonym of frugal, but there is an illustration or exemplification of the word that allows the reader to understand the meaning of this word.

so you can tailor your resumé to the position

would be the answer. hope this .