I followed her ______ but I still couldn’t work out how to use t

I followed her ______ but I still couldn’t work out how to use the sewing machine.
A、description
B、introduction
C、instructions
D、comments
【正确答案】：C
【题目解析】：description描写，描述；introduction介绍；instruction指令，用法说明；comment评论句意：我听了她的指示，但还是不知道如何使用这台缝纫机。