Which of the Following Is the Least Satisfactory Statement of a Hypothesis

Which of the following is the least satisfactory statement of a hypothesis?

A) As GNP increases, social inequality increases.
B) Men are less religious than women.
C) Happiness is related to intelligence.
D) Women tend to receive less pay than men for the same work.
E) The greater the social distance between criminal and victim, the more severe the punishment.