Choose the grammatically incorrect option below that includes run-on sentences.
The exam was moved to Tuesday afternoon the professor had been ill and could not be on campus Monday, when it was originally scheduled.
Moving the test to Tuesday afternoon instead of Monday, when it was originally scheduled, was the result of the professor’s illness, which kept him off campus.
The exam was moved to Tuesday afternoon because the professor had been ill and could not be on campus on Monday, when it was originally scheduled.
Since the professor was ill and could not be on campus Monday, when the exam was originally scheduled, the test was moved to Tuesday afternoon.