参考答案

正确答案：B
解析：Why won't the woman confront the professor on the issue?
选项中的She，is afraid，is not completely sure等表明，本题考查女士对the class 或对教授的担心。根据女士听说的I still need to get a decent mark in this course and I'm not doing it by making him angry可直接确定答案为[B]。