If a Researcher Observes a Positive Correlation Between Stress and Having

Multiple Choice

If a researcher observes a positive correlation between stress and having a significant health event like a heart attack, what can the researcher conclude?

A) The health event causes stress.
B) Stress causes the health event.
C) Knowing a person's stress level may help to predict that person's likelihood of experiencing the health event.
D) Some other variable causes both higher levels of stress and higher risk of health events.