A question to reach the final rejected state will depend on the number of reviewers assigned for the question.

As a reviewer, if you feel the question  does not meet the requirements, then you should reject the question. On clicking the Reject button, a dialog box will ask you to enter a mandatory explanation for the rejection.

If there are more than one reviewer, the rejection process will need to meet the rejection criteria decided for the question.

For eg. If there are two reviewers for an question a minimum of 2 reviewers or as decided will be required to reject an question.

The user rejecting the question will get the pop up window to choose the state, if the question state is going to be changed.

If there are more than two reviewer for a question, then while rejecting, first reviewer will not get drop down to choose where the question to be send.