The matter ____ your fate can not be taken for granted.  

A. relating to     B. related to     C. relate to     D. relates to

为什么选B,而不是A？

 解释：

relating to 相当于一个介词，意思为：to be about something or connected with something(与……相联系，与……有关) （麦克米伦高级英汉双解词典）

We’re only interested in events that relate directly to the murder.

我们只对与谋杀案直接相关的事情感兴趣。（麦克米伦高级英汉双解词典）

The new legislation related to corporate activities.

新立法与公司活动有关。（新牛津英汉双解大词典）

We need to see figures relating to the last six months.

我们要看与过去6个月相关的统计数字。（麦克米伦高级英汉双解词典）

Anything relating to maths is a complete mystery to me. 我对数学一窍不通。

be related to 中的related 则是一个形容词，意思为to show or make a connection between two different things（把…）联系起来（麦克米伦高级英汉双解词典）；be causally connected（与…）有因果关系，关联（新牛津英汉双解大词典）

We offer courses that relate English literature to other subjects.

我们开设了一些将英国文学和其他科目联系起来的课程。（麦克米伦高级英汉双解词典）

High unemployment is related to high crime rates.

高失业率和高犯罪率有因果关系。（新牛津英汉双解大词典）

The heart attack could be related to his car crash last year.

心脏病的发作可能与他去年的车祸有关