单选题 The manufacturer was forced to return the money to the consumers under ______ of law.
A. guideline B. definition C. constraint D. idetity

【正确答案】 C
【答案解析】该句意思为“在法律规定的范围内”。只有constraint(约束，强制)具有此意。guideline指导性原则；definition定义；identity身份。