Select the most appropriate meaning of the given idiom.
A wild goose chase

Correct option is C

Idiom Meaning:
A wild goose chase - a foolish, hopeless, or fruitless pursuit.
Explanation:
• The idiom refers to a task that is pointless or unlikely to succeed.
Correct: Chasing after that treasure map was a wild goose chase.
Option Meanings:
(a) On a hunt – vague, doesn’t reflect futility.
(b) Fruitful search – opposite in meaning.
(c) Fruitless search – correct.
(d) Ideal seeking – unrelated.