Sunny Is Interested in Testing the Hypothesis That Accidents Are

Sunny is interested in testing the hypothesis that accidents are a matter of repressed desires. To test this, she asks participants about recent accidents and their corresponding causes. Just as she suspected, her participants are unaware of the connection between their accidents and unconscious desires. She interprets her findings as support for her hypothesis that people are unaware that their own desires are causing their accidents. What is wrong with her research?

A) Sunny's hypothesis cannot be disproved.
B) There is no criterion variable in her study.
C) Sunny does not adequately manipulate the independent variable.
D) Sunny does not use a longitudinal design.