When Researchers Have Tested the Accuracy of Biorhythm Charts by Examining

Multiple Choice

When researchers have tested the accuracy of biorhythm charts by examining occupational accidents in light of the charts' predictions,they have found the charts:

A) to be useful only for those working in outdoor occupations.
B) to be useful only for women and not for men.
C) to be useful only for healthy individuals with no chronic illnesses.
D) to be useless.