2023年新考纲，第6章第10题（正确选项为B），根本就不知道考的是哪个知识点、而且几个选项看着比较陌生，貌似根本就没见到过。烦请老师予以协助，十分感谢！
A fund management entity that advances clients’ engagement activities even if not investing the client’s funds, is best described as:
a. a proxy firm
b. an overlay service provider
c. an ESG investment consultant
