What does the idiom 'Barking up the wrong tree' mean?

Correct option is C

Option (c) is the correct meaning of the given idiom.
Given Idiom: Barking up the wrong tree — It means to pursue a mistaken course of action, blame/accuse the wrong person, or look for solutions in the wrong place (Hindi: गलत दिशा में प्रयास करना / गलत व्यक्ति पर आरोप लगाना).
Example: “If you think I leaked the report, you’re barking up the wrong tree.”
Other related idioms and their meanings:
· On a wild goose chase: Wasting time on a futile search (Hindi: व्यर्थ खोज).
· Get the wrong end of the stick: To misunderstand a situation (Hindi: गलत अर्थ निकालना).
· Tilt at windmills: Fight imaginary enemies; misguided effort (Hindi: काल्पनिक शत्रुओं से लड़ना).