সঠিক উত্তরঃB.
He asked me how long I would carry him.
Explanation: • সঠিক উত্তর হবে - He asked me how long I would carry him. • Subject + ask + object (যদি থাকে) + interrogative pronoun/interrogative adverb + Reported speech এর subject + verb + বাকী অংশ।