This article may shock some sensitive readers, I offer my apologies in advance.
A. from whom
B. for whom
C. to whom
D. towards whom
网友回答
A. from whom
B. for whom
(答案→)C. to whom
D. towards whom
解析：考查定语从句中介词+关系代词的用法：介词的选择可以根据先行词，也可以根据定语从句的动词搭配来定，定语从句中是offer apologies to sb 词组，少介词to，选C。意为：这篇文章可能会让敏感的读者震惊，我要提前为此向他们表示道歉。选C。