The phrase "flash in the pan" is an idiomatic expression. To understand its meaning, let's break it down:
- Flash: This word indicates something bright or noticeable but typically very quick or momentary.
- In the pan: Historically, this refers to the flash of gunpowder in the flintlock muskets, which made a bright but brief flash without firing a bullet.
Given this context, "flash in the pan" suggests a brief and fleeting event, often seen as initially impressive but lacking lasting impact or duration.
Considering the options provided:
- A permanent solution: Contradicts the transient nature of "flash."
- A sudden failure: Doesn't capture the initial impression of success associated with a "flash."
- A brief success: Matches the short-lived, impressive burst of success that the phrase implies.
- A long-term achievement: Opposes the notion of brevity and impermanence.
Therefore, the correct answer is: A brief success.