Which of the Following Is an Example of a Null

Which of the following is an example of a null hypothesis?

A) There is no relationship between political corruption and violence.
B) People who have less information about the political process are less likely to be interested in politics than people who have more information about the political process.
C) People who were not politically socialized as children will exhibit a lower interest in politics as adults than people who were politically socialized as children.
D) People who are intimidated by the political process are less likely to be interested in politics than people who are not intimidated by the political process.