托业考试

根据网考网考试中心的统计分析，以下试题在2017/8/23日托业考试习题练习中，答错率较高，为：82%
【单选题】Medibank now offers customers greater ______, allowing them to customize their health insurance policy.

• (A) return
• (B) flexibility
• (C) insight
• (D) effect