Final answer:
The second paragraph best explains how electromagnetism affects everyday forces by highlighting its role in atomic interactions, energy flow, and nuclear force.
Step-by-step explanation:
The paragraph that best supports the idea that electromagnetism affects forces all around us is: "Aside from the force of gravity, almost every occurrence in daily life stems from electromagnetism. These forces are responsible for the interactions between atoms and the flow of energy. They are also responsible for nuclear force, which controls the formation of an atom's nucleus and its breakdown, or decay." This explanation encompasses the extensive influence that electromagnetism has over various aspects of our everyday life.