The correct answer is letter A. Connective tissues can be liquid, solid, or semi-solid. They are supporting fibers that are found within the body that give support to the musculoskeletal organ systems and they also bind all other tissues together.
I'm guessing Liver.
If it was in the stomach, we wouldn't get belly aches. If it were in the large intestine, we wouldn't poop. So that's my guess.
If there's options, I assume mutation?