The theory that is demonstrated by this experiment is natural selection.
Basically, only the strongest bacteria survived, and nature decided which of those bacteria were fit enough to get to live and reproduce in the future. Those bacteria that were "willing" and able to fight their way through a huge number of bacteria were the ones who ultimately won.
Think it is c but I could be wrong have not taken bio in a while
Explanation:
i realy dont konw but you can still eaxplain
I think it is carbohydrate metabolism