I think we need to see an investment （）before we make an expensi

I think we need to see an investment （）before we make an expensive mistake.
A、guide
B、entrepreneur
C、consultant
D、assessor
【正确答案】：C
【题目解析】：guide向导，导游；entrepreneur企业家；consultant顾问；assessor估价员。根据句意“为了避免犯代价过高的错误，我想我们需要请教一下投资顾问。”可知答案应为C