Which of the Following Would Be the Best Demonstration of the Validity

Multiple Choice

Which of the following would be the best demonstration of the validity of a scale for the measurement of suicide potential

A) Ask mental health experts to assess whether it measures suicide potential accurately.
B) Correlate the scale results with the actual occurrence of suicides.
C) Ask people who have attempted suicide whether it measures suicide potential accurately.
D) Administer the scale to those who have attempted suicide to see if they score appropriately on it.