While working in that research center, I was responsible _______

While working in that research center, I was responsible _______ meeting the people.
A、at
B、in
C、for
D、on
【正确答案】：C
【题目解析】：be responsible for doing sth 对……负责，固定搭配句意为：在那个研究中心工作时，我负责与人打交道。