Which One of the Following Scenarios Best Demonstrates the Use

Multiple Choice

Which one of the following scenarios best demonstrates the use of physical trace measures?

A) Researchers examine the drawings of a group of four and five year old children for evidence of trauma or sexual abuse.
B) A researcher compares the final exam scores of two groups of college freshman students enrolled in two separate reading courses.
C) A classroom reading teacher examines the books on her classroom reading shelf for signs of wear to see what ones are read most.
D) Researchers blind to experimental conditions observe and record the behavior of two groups of schizophrenic patients who have been given two different experimental drugs.