সঠিক উত্তর হচ্ছে: Misguided line of thought
ব্যাখ্যা:
"Barking up the wrong tree" (PHRASE) means -
Be pursuing a mistaken or misguided line of thought or course of action.
Example sentence: His wife thinks he's under suspicion, but I'm sure she's barking up the wrong tree.
Source: Oxford Dictionary