At a Suicide Prevention Center, You Hear a Counselor Say

At a suicide prevention center, you hear a counselor say, "Will you promise me that you will call again if you ever feel like killing yourself again?" Which one of the goals and techniques of suicide prevention does this question BEST represent?

A) formulating a plan
B) assessing suicide potential
C) understanding and clarifying the problem
D) assessing and mobilizing the caller's resources