问题：

[单选题]Examinees who are preparing for TOEFL nad IELTs need to produce writing which demonstrate their ideas and _____.9W1答案窝(daanwo.com)-大学作业答案分享平台
Aprovide evidence for their opinions9W1答案窝(daanwo.com)-大学作业答案分享平台
Bpersuade readers to accept their opinions9W1答案窝(daanwo.com)-大学作业答案分享平台
Ccompare their opinions with the others' opinions9W1答案窝(daanwo.com)-大学作业答案分享平台
Dpresent different reasons for their opinions