Section: Verbal Reasoning

1) The mayfly is an ___ creature: its adult life lasts little more than a day.

1. elegant
2. ephemeral
3. idiosyncratic
4. impulsive
5. omnivorous

If the mayfly's adult life lasts for such a short time, it clearly is an ephemeral (short-lived, fleeting) creature. Note how the second clause clarifies what the author means by ephemeral