Idiom Magic:為……負責 Answer for

【明報專訊】As Esper surveyed his damaged spacecraft, it soon became clear that someone had shot him down with an arrow. "Who's to answer for this?" he cried. A young man was standing nearby. "As that is my arrow, I am afraid I must answer for that, sir," he said. Impressed with the fellow's honesty, Esper promptly forgave him. Answer for refers to accepting responsibility for an action.