Answer:
The control group
Explanation:
This group is known as the control group. It is used as the bench mark in an experiment to compare or measure results bin other groups. It is used in an experiment as a way of checking if the experiment would actually work. That is it ensures that the treatment that is being given is still within the experiment and not as a result of an outside influence that has nothing with the experiment.
People began to realise that slavery was wrong.
They were mist likely following food sources.
It means the president is chosen by which has the most percentage of the population voting for them
