The phrase "gift of the gab" is an idiom meaning the ability to speak easily, fluently, and persuasively.
It describes someone who has a natural talent for conversation and verbal expression, often charming or convincing others through speech.
Option (A), "Lucky," has no relation to speaking ability.
Option (B), "A big surprise," does not match the idiomatic meaning of the phrase.
Option (C), "Honest person," is unrelated to fluency or persuasiveness in speech.
Option (D) accurately captures the meaning of the idiom, making it the correct choice.