单选题 It is critical that all employees ______ daily responsibilities involve monitoring others attend the seminar titled, Effective Communication.

A、 whom
B、 whose
C、 what
D、 which

【正确答案】 B

【答案解析】[解析] 语法：关系代词
1．involve后出现宾语monitoring others，因此A选项排除。
2．本题考查关系代词的格，需要填入一个关系代词做employees的先行词。employee和responsibilities的关系是所属关系，因此关系代词的所有格B．whose为正确选项。