You are presented with the quiz "Many believe the cause of smallpox to be what?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "viruses are usually considered to be nonliving" and "variola major, the virus that causes smallpox, is considered a potential bioterrorism agent". 

So, what's the best answer to the question?


 

     Nonliving      