Answer: The correct answer is that it must be based on scientific observations that can be repeated in a controlled setting. Explanation: This controlled setting, which replicates the real world encounters is known as scientific experiments. Experiments permit for a smaller scale world where the results can be determined with the manipulation of specific elements in the controlled setting. Experiments assist in the understanding of the natural world.
The overall charge of an atom is neutral because it has the same amount of protons and neutrons. They are positive and negative so they cancel each other out.
