Binary fission is a form of asexual reproduction used by members of domains archaea and bacteria among other organisms. Like mitosis (in eukaryotic cells), it results in cell division of the original cell to produce two viable cells that can repeat the process. Hope I’ve helped ;)
The role is that it helps you with the urinal system and makes the things in your body go out of the body. (hopes it at least helped a little! (=^T^=)
Pretty sure that the answer is A