It's is all of the above. Just a little hint for you, when there is the option- all of the above, chances are that's the answer.
Idk reallyyyyyyyyyyyyyyy so sorryyyyyy
I think scientists are so interested with our brains, because our brain could be considered the most powerful thing ever, everything man-made was from our brain. Our brain can literally scare itself to death. I think they are so interested because it is so powerful.
