单选题 However, the new law, once passed, will ______ the Burlington agreement illegal by giving workers the right to join unions of their choice.无

【正确答案】 D

【答案解析】句意：然而，由于这项新法律给予工人自主选择工会的权利，其一旦被通过，便会使伯灵顿协议失去法律效力。 render导致，使……处于某种状况。 convert使转变；转换。