An accurate definition of tenebrism would be that it is marked by a very strong contrast between light and dark tones, imagine like when people tell ghost stories and everything's dark but they point a flashlight to their faces. The darkness is the dominating feature but the light is there as a sharp contrast. This is what tenebrism was and what Caravaggio did all the time.
I don't know which autobiographical piece of art you are talking about, but generally an autobiography is about the writer himself.
So, having that in mind, I'd say that this is an autobiographical piece of art because <span>c. It shows the pain and suffering experienced by the artist. </span>
It depends but if you're asking for my opinion, then I will believe with those people who thought that it indicates the body is from the apostle Peter because it's based on my religious belief. The archaeologist can be true, so it just depends on your beliefs.
